Friday
April 18, 2014

Search: find the magnetic field (magnitude and direction) at point A, which is located 9.0 cm away from wire 2 on a line perpendicular to the line joining the wires

Number of results: 117,312

College physIcs
An electron travels at a speed of 4.0104 m/s through a uniform magnetic field whose magnitude is 1.410−3 T. What is the magnitude of the magnetic force on the electron if its velocity and the magnetic field are perpendicular? F= N What is the magnitude of the magnetic ...
Friday, February 19, 2010 at 5:52pm by Lanise

Physics--Current question
Two long straight parallel wires separated by 1.00mm carrying currents in opposite directions with current equaling 10.0A each. Find the magnitude and direction of the magnetic field at Point A which = 0.50mm, Point B = 0.50mm, and Point C=0.50mm and write the directions of ...
Monday, July 27, 2009 at 11:29am by MP

Physics
The figure below shows two current carrying wires and the directions of the currents they carry. The wires carry the following currents: I1 = 7.1 A and I2 = 8.9 A. Wire 1 is at (0, 5.8) mm; wire 2 is at (15.1, 0) mm; point P is at (15.1, 5.8) mm. Wire 1 is pointing into the ...
Tuesday, April 10, 2012 at 10:02pm by Jessica

magnets
A proton with a velocity of 2.0 x 10^7 m/s in the horizontal (+x) direction enters a region of uniform magnetic field that is 1 meter wide and points out of the page with a magnitude of 0.05 Tesla. At what angle below the x-axis, in degrees, does the proton's trajectory emerge...
Wednesday, November 20, 2013 at 1:16am by James

magnets
A proton with a velocity of 2.0 x 10^7 m/s in the horizontal (+x) direction enters a region of uniform magnetic field that is 1 meter wide and points out of the page with a magnitude of 0.05 Tesla. At what angle below the x-axis, in degrees, does the proton's trajectory emerge...
Wednesday, November 20, 2013 at 1:16am by James please help

science
The Earth's magnetic field will cause the newly formed seafloor to become magnetic. When the seafloor cools, the magnetism of the sefloor will become permanent. Then if the Earth's magnetic field changes direction (happens every few hundred thousand years), the seafloor's ...
Monday, March 23, 2009 at 5:56pm by Count Iblis

physics - speed of electron in magnetic field
A beam of electron is accelerated by a potential difference of 2.5okV. The electrons are then allowed to pass into a magnetic field of strength 10.0mT. As the electrons enter the field, the direction of the velocity is at right angles to the direction of the magnetic field. ...
Sunday, December 5, 2010 at 6:13pm by Farah

Physics
Near the equator, the Earth's magnetic field point almost horizontally to the north and has a magnitude of B = 50 micro T. What should be the magnitude and direction for the velocity of an electron if its weight is to be exactly balanced by the magnetic force?
Tuesday, November 16, 2010 at 10:19pm by Ri

Physics
A magnetic field has a magnitude of 1.2 10-3 T, and an electric field has a magnitude of 5.9 103 N/C. Both fields point in the same direction. A positive 1.8 C charge moves at a speed of 2.9 106 m/s in a direction that is perpendicular to both fields. Determine the magnitude ...
Thursday, September 27, 2007 at 10:45pm by Mary

physics
Two long, straight wires are separated by 0.12 m. The wires carry currents of 8.0 A in opposite directions, as the drawing indicates. (a) Find the magnitude of the net magnetic field at the point A. ___T (b) Find the magnitude of the net magnetic field at the point B. ___T
Tuesday, September 21, 2010 at 1:30am by Anonymous

physics
A current I = 16 A is directed along the positive x-axis and perpendicular to a magnetic field. A magnetic force per unit length of 0.15 N/m acts on the conductor in the negative y-direction. Calculate the magnitude and direction of the magnetic field in the region through ...
Monday, March 8, 2010 at 11:01pm by Raul

physics
A magnetic field has a magnitude of 1.20 10-3 T, and an electric field has a magnitude of 5.50 103 N/C. Both fields point in the same direction. A positive 1.8-C charge moves at a speed of 2.60 106 m/s in a direction that is perpendicular to both fields. Determine the ...
Tuesday, February 8, 2011 at 10:04pm by aml

Physics
A proton, moving in negative y-direction in a magnetic field , experiences a force of magnitude F, acting in the negative x direction. a) What is the direction of the magnetic field producing force? b) Does your answer change if the word proton is replaced by electron? I get a...
Tuesday, October 25, 2011 at 8:27pm by Jessica

Physics
An electron that has velocity v = (3 x 105 m/s) and moves along positive x direction through the uniform magnetic field B = (0.8T) which is along the positive z direction. a. Find the force on the electron (magnitude and direction). (e = - 1.6 x 10-19 C, m=9.1 x10-31 kg) b. ...
Monday, April 25, 2011 at 6:41pm by asif

Physics
An electron moving through a uniform magnetic field with a velocity of 2.0x10^6 m/s [up] experiences a maximum magnetic force of 5.1x10^-14 N [left]. CAlculate the magnitude and direction of the magnetic field.
Sunday, April 26, 2009 at 11:24pm by Susan

Physics
A long, straight wire carrying a current of 317 A is placed in a uniform magnetic field that has a magnitude of 7.69 10-3 T. The wire is perpendicular to the field. Find a point in space where the net magnetic field is zero. Locate this point by specifying its perpendicular ...
Monday, February 25, 2013 at 5:03pm by Anonymous

PHYSICS
The magnetic field of the Earth at a certain location is directed vertically downward and has a magnitude of 54.0 T. A proton is moving horizontally towards the west in this field with a speed of 6.00 ✕ 106 m/s. (a) What is the direction and magnitude of the magnetic ...
Tuesday, October 29, 2013 at 1:28am by Kathy

science
An electromagnetic field contains of both an electric field (which exerts a force on any charge) and a magnetic field (which exerts a force only on moving charges). Electric and magnetic fields are vector properties (having magnitude and direction of every point in space), but...
Thursday, December 31, 2009 at 2:35pm by drwls

physics
What is the direction of the force acting on a current-carrying conductor lying in a magnetic field? A. It is in a direction opposite to the direction of the magnetic field. B. It is at angles to the direction of the current. C. It is at right angles to both the direction of ...
Sunday, May 24, 2009 at 6:25pm by sally

physics-Electric & magnetic fields
A proton traveling at 10^4 m/s in the positive x-direction, enters a region where there is uniform electric field of magnitude 10 v/m and a uniform magnetic field of magnitude 10^-2 T. The electric and magnetic fields are parallel and are in the z-direction. In the following ...
Sunday, May 15, 2011 at 5:47am by Sandhya

physics
A circular coil (980 turns, radius = 0.078 m) is rotating in a uniform magnetic field. At t = 0 s, the normal to the coil is perpendicular to the magnetic field. At t = 0.027 s, the normal makes an angle of 45o with the field because the coil has made one-eighth of a ...
Friday, November 23, 2012 at 9:40pm by johnathan

PHYSICS
A proton moves perpendicular to a uniform magnetic field B at 1.20 107 m/s and experiences an acceleration of 2.00 1013 m/s2 in the +x direction when its velocity is in the +z direction. Determine the magnitude and direction of the field. T in the direction
Thursday, October 24, 2013 at 12:06am by smita

PHYSICS
A proton moves perpendicular to a uniform magnetic field B at 1.20 107 m/s and experiences an acceleration of 2.00 1013 m/s2 in the +x direction when its velocity is in the +z direction. Determine the magnitude and direction of the field. T in the direction
Saturday, October 26, 2013 at 6:20pm by smita

physics
The electric field at the point and points in the positive direction with a magnitude of 8.00 . At the point and the electric field points in the positive direction with a magnitude of 12.0 . Assume this electric field is produced by a single point charge. What is the charge ...
Tuesday, February 16, 2010 at 7:13pm by Adam

physics
The electric field at the point x = 5.00cm and y = 0 points in the positive x direction with a magnitude of 10.0 N/C. At the point x = 10.0cm and y = 0 the electric field points in the positive x direction with a magnitude of 16.0 N/C. Assume this electric field is produced by...
Friday, January 27, 2012 at 1:48pm by jazz

Physics repost
A magnetic field has a magnitude of 1.2 10-3 T, and an electric field has a magnitude of 5.9 103 N/C. Both fields point in the same direction. A positive 1.8 C charge moves at a speed of 2.9 106 m/s in a direction that is perpendicular to both fields. Determine the magnitude ...
Saturday, September 29, 2007 at 12:38pm by Mary

Physics
need help with this problem :/ A circular coil (980 turns, radius = 0.078 m) is rotating in a uniform magnetic field. At t = 0 s, the normal to the coil is perpendicular to the magnetic field. At t = 0.027 s, the normal makes an angle of 45o with the field because the coil has...
Sunday, October 28, 2012 at 6:13pm by derek

Physics
An infinite straight wire carrying a current I=5 A flowing to the right is placed above a rectangular loop of wire with width w=11 cm and length L=27 cm, as shown in the figure below. The distance from the infinite wire to the closest side of the rectangle is h=1.7 cm. The ...
Friday, June 14, 2013 at 2:58pm by Annoyingmous

Physics
An infinite straight wire carrying a current I=5 A flowing to the right is placed above a rectangular loop of wire with width w=11 cm and length L=27 cm, as shown in the figure below. The distance from the infinite wire to the closest side of the rectangle is h=1.7 cm. The ...
Saturday, June 15, 2013 at 4:35am by Annoyingmous

physics
A proton traveling at 10^4 m/s in the positive x-direction, enters a region where there is uniform electric field of magnitude 10 v/m and a uniform magnetic field of magnitude 10^-2 T. The electric and magnetic fields are parallel and are in the z-direction. In the following ...
Saturday, May 14, 2011 at 11:34pm by Sandhya

physics
A proton traveling at 10^4 m/s in the positive x-direction, enters a region where there is uniform electric field of magnitude 10 v/m and a uniform magnetic field of magnitude 10^-2 T. The electric and magnetic fields are parallel and are in the z-direction. In the following ...
Sunday, May 15, 2011 at 3:28am by Sandhya

Physics
An electron moving along the positive x axis perpendicular to a magnetic field experiences a magnetic direction in the negative y direction. What is the direction of the magnetic field?
Wednesday, April 2, 2008 at 12:46am by Jessica

physics
A charge of 12 C, traveling with a speed of 9.0 x 106 m/s in a direction perpendicular to a magnetic field, experiences a magnetic force of 8.7 x 10-3 N. What is the magnitude of the field?
Monday, April 1, 2013 at 8:58pm by adrienne

Physics
The electric field at the point x=5.00 cm and y=0 points in the positive x direction with a magnitude of 10.0 N/C. At the point x=10.0 cm and y=0, the electric field points in the positive x direction with a magnitude of 15.0 N/C. Assuming the field is produced by a single ...
Sunday, February 7, 2010 at 5:22pm by Katherine

physics
can anyone please help me on this one? A circular coil (980 turns, radius = 0.078 m) is rotating in a uniform magnetic field. At t = 0 s, the normal to the coil is perpendicular to the magnetic field. At t = 0.027 s, the normal makes an angle of 45 degrees with the field ...
Sunday, November 18, 2012 at 8:23pm by johnathan

Physics
The electric field at the point x=5.00 cm and y=0 points in the positive x direction with a magnitude of 10.0 N/C. At the point x=10.0 cm and the electric field points in the positive x direction with a magnitude of 16.0 N/C . Assume this electric field is produced by a single...
Monday, January 23, 2012 at 11:44pm by Cooper

Physics
A proton moving with a speed of 200 m/s enters perpendicular to the direction of the magnetic field and experiences a force of 2x10^-18N. What is the magnitude of the magnetic field? any help is reallya appreciated
Sunday, January 27, 2013 at 9:10pm by anonymous

electric force/field
Three point charges, A = 2.2 C, B = 7.5 C, and C = -3.9 C, are located at the corners of an equilateral triangle . Find the magnitude and direction of the electric field at the position of the 2.2 C charge. magnitude = . N/C direction =
Monday, January 23, 2012 at 11:31am by physics

PHYSICS
A proton moves perpendicular to a uniform magnetic field B at 1.20 107 m/s and experiences an acceleration of 2.00 1013 m/s2 in the +x direction when its velocity is in the +z direction. Determine the magnitude and direction of the field.
Tuesday, October 29, 2013 at 1:02am by Kathy

physics
A proton, traveling with a velocity of 4.9 106 m/s due east, experiences a magnetic force that has a maximum magnitude of 7.4 10-14 N and a direction of due south. What are the magnitude and direction of the magnetic field causing the force?
Wednesday, February 26, 2014 at 12:16am by Dee

College Physics
A proton moves perpendicular to a uniform magnetic field B at 1.20 107 m/s and experiences an acceleration of 2.00 1013 m/s2 in the +x direction when its velocity is in the +z direction. Determine the magnitude and direction of the field.
Friday, October 25, 2013 at 7:52pm by Suhani

Physics
A particle with a charge of 31 C moves with a speed of 62 m/s in the positive x-direction. The magnetic field in this region of space has a component of 0.50 T in the positive y-direction, and a component of 0.61 T in the positive z-direction. What is the magnitude and ...
Thursday, April 25, 2013 at 1:56pm by Valerie

Physics
A particle with a charge of 31 C moves with a speed of 62 m/s in the positive x-direction. The magnetic field in this region of space has a component of 0.50 T in the positive y-direction, and a component of 0.61 T in the positive z-direction. What is the magnitude and ...
Thursday, April 25, 2013 at 1:56pm by Valerie

Math
An electron accelerates from rest to the right, in a horizontally directed electric field. The electron then leaves the electric field at a speed of 4.0 106, entering a magnetic field of magnitude 0.20 T (Tesla) directed into the screen. Calculate the magnitude and ...
Saturday, February 23, 2013 at 4:30pm by Ginny

physics
A 0.0150-m wire oriented horizontally between the poles of an electromagnet carries a direct current of 9.5 A. The angle between the direction of the current and that of the magnetic field is 25.0 as shown. If the magnetic field strength is 0.845 T, what is the magnitude and...
Thursday, May 6, 2010 at 4:27pm by lakhvir

physics
Consider two current carrying wires shown below. The current in the wire 1 is 4.5 A in the positive x direction. Find the magnitude and direction of the current in wire 2 if the net magnetic field at point A is to be 7.5 μT in the positive z direction (coming out of the ...
Monday, July 25, 2011 at 4:01am by Chloe

physics
The drawing shows a parallel plate capacitor that is moving with a speed of 30 m/s through a 3.1 T magnetic field. The velocity vector v is perpendicular to the magnetic field. The electric field within the capacitor has a value of 170 N/C, and each plate has an area of 7.5 10...
Wednesday, February 26, 2014 at 12:07am by Dee

Electricity
suppose that you're facing a straight current carrying conductor, and the current is following toward you.the lines of magnetic force at any point in the magnetic field will act in? A)the same direction as the current. B)a clockwise direction. C)the direction opposite to the ...
Saturday, August 20, 2005 at 5:05pm by angela

physics
A particle has a charge of +1.5 C and moves from point A to point B, a distance of 0.19 m. The particle experiences a constant electric force, and its motion is along the line of action of the force. The difference between the particle's electric potential energy at A and B ...
Tuesday, January 17, 2012 at 10:38pm by Taylor

physics
A particle has a charge of +1.5 C and moves from point A to point B, a distance of 0.19 m. The particle experiences a constant electric force, and its motion is along the line of action of the force. The difference between the particle's electric potential energy at A and B ...
Tuesday, January 17, 2012 at 10:39pm by Taylor

physics
The current in the loop and magnetic field direction are connected according to the right hand rule: curl fingers to the direction of the current in the loop, the thumb points in the direction of magnetic moment of the loop that coincides with the direction of B. => The ...
Tuesday, December 17, 2013 at 3:57pm by Elena

physics
When does a magnetic field induce maximum EMF in a wire moving with a constant velocity? A. When the wire is moved at an angle of 60 degrees to the direction of the magnetic field B. When the wire is moved at right angles to the magnetic field C, When the wire is moved ...
Sunday, April 12, 2009 at 4:27pm by sophie

Physics!!!
When does a magnetic field induce maximum EMF in a wire moving with a constant velocity? A. When the wire is moved at an angle of 60 degrees to the direction of the magnetic field B. When the wire is moved at right angles to the magnetic field C, When the wire is moved ...
Sunday, April 12, 2009 at 7:45pm by sophie

Physics
A flat circular coil with 192 turns, a radius of 2.35 x 10-2 m, and a resistance of 0.359 is exposed to an external magnetic field that is directed perpendicular to the plane of the coil. The magnitude of the external magnetic field is changing at a rate of B/t = 0.696 T/s...
Thursday, March 7, 2013 at 9:14pm by Anonymous

physics
The current density in a cylindrical conductor of radius R = 59.9 cm, varies as J(r) = J0r/R (in the region from zero to R), where J0 = 0.511 C/m2. a) Find the magnitude of the magnetic field at r = 29.95 cm. b) Find the magnitude of the magnetic field at r = 119.8 cm
Tuesday, April 19, 2011 at 1:53pm by ok

physics
A 1.6 N loop of wire is hung in a magnetic field as shown. If the spring scale reads 0.60 N when a current of 1.0 A passes through the loop what is the magnitude and direction of the magnetic field?
Wednesday, May 22, 2013 at 10:31pm by vivi

physics
The current density in a cylindrical conductor of radius R = 59.5 cm, varies as J(r) = J0r/R (in the region from zero to R), where J0 = 0.423 C/m2. a) Find the magnitude of the magnetic field at r = 29.75 cm. b) Find the magnitude of the magnetic field at r = 119 cm
Monday, December 10, 2012 at 7:58am by Anonymous

physics
A particle of charge +q and mass m is initially launched at speed v in a region with a constant, uniform magnetic field of magnitude B. If the particle launched in a direction perpendicular to the magnetic field, by the time the particle has traveled a distance d, the work ...
Wednesday, July 28, 2010 at 4:53pm by J.O

magnets
A particle of charge +q and mass m is initially launched at speed v in a region with a constant, uniform magnetic field of magnitude B. If the particle launched in a direction perpendicular to the magnetic field, by the time the particle has traveled a distance d, the work ...
Wednesday, December 18, 2013 at 11:30am by Anon

Physics
An electron is moving paralel to the Earth's surface at the equator in a direction 12 degrees south of east. Its velocity is 9.2 x 10^4 m/s and a magnetic force of 9.4 x 10^-18 N is exerted on the electron. If the magnetic field points south at this location, what is the ...
Monday, February 27, 2012 at 10:38pm by Doryn

physics (Right Hand Rule Question)
A proton traveling due east in a region that contains only a magnetic field experiences a vertically upward force away from the surface of the earth. What is the direction of the magnetic field? a)North b)East c)South d)West e)Down I know I need to use the right hand rule to ...
Friday, February 17, 2012 at 12:39am by Daniel

Physics
An electron travels at a speed of 1.0104 through a uniform magnetic field whose magnitude is 1.210−3 . What is the magnitude of the magnetic force on the electron if its velocity and the magnetic field are perpendicular?
Monday, November 1, 2010 at 3:43pm by Lisa

physics
A flat circular coil with 113 turns, a radius of 3.64 10-2 m, and a resistance of 0.524 Ω is exposed to an external magnetic field that is directed perpendicular to the plane of the coil. The magnitude of the external magnetic field is changing at a rate of ΔB/Δ...
Tuesday, October 22, 2013 at 11:40pm by Anonymous

physics
A conductor of length 0.8 m carrying a current of 2.5 A is kept in a magnetic field of 0.6 Tesla. What is the magnitude of the force experienced by the conductor if it is inclined at an angle 30 to the direction of the magnetic field? Choose one answer. a. 0.6 N b. 1.0 N c. 1...
Saturday, June 4, 2011 at 9:54pm by ashley --- HELP PLEASEE!!!

Physics 3
A 2.3-keV proton is moving horizontally and passes perpendicular to the Earths magnetic field at a location where the field magnitude is 52.0 T. i) Determine the magnetic force on the proton? ii) Find the ratio of this force to the gravitation force on the proton? iii...
Wednesday, April 13, 2011 at 1:40pm by Ziera

Physics 3
A 2.3-keV proton is moving horizontally and passes perpendicular to the Earths magnetic field at a location where the field magnitude is 52.0 T. i) Determine the magnetic force on the proton? ii) Find the ratio of this force to the gravitation force on the proton? iii...
Wednesday, April 13, 2011 at 1:55pm by Ziera

Physics PLEASE HELP!
A flat circular coil with 97 turns, a radius of 4.04 10-2 m, and a resistance of 0.528 Ω is exposed to an external magnetic field that is directed perpendicular to the plane of the coil. The magnitude of the external magnetic field is changing at a rate of ΔB/Δt...
Thursday, March 14, 2013 at 4:20am by Nixon

physics
A circular coil with a radius of 25 cm has 20 turns. The coil is oriented perpendicularly to a magnetic field whose initial magnitude is 3.2 T. Suddenly, the magnetic field vanishes in 0.4 s. a. What is the initial magnetic flux in the coil? b. What is the induced emf in the ...
Monday, August 26, 2013 at 3:51am by jim

Physics
A long coaxial cable consists of two concentric conductors. The inner conductor is a cylinder with radius R1, and it carries a current I0 uniformly distributed over its cross section. The outer conductor is a cylindrical shell with inner radius R2 and outer radius R3. It ...
Sunday, April 7, 2013 at 5:17am by abdul rahman

Physics
A wire 75cm long carrying a current of 6.0A toward the north passes through a uniform magnetic field. The magnitude of the force acting on the wire is 0.60N and is directed downward. What is the strengh and direction of the magnetic field?
Wednesday, May 5, 2010 at 3:47pm by Javier

physics
Which of the following is correct for the charge in a magnetic field? Choose one answer. a. A stationery charge can experience a force in a magnetic field. b. A moving charge parallel to the direction of the magnetic field can experience a force. c. A moving charge ...
Saturday, June 4, 2011 at 9:56pm by ashley --- HELP PLEASEE!!!

Physics
There is a very large horizontal conducting plate in the plane (consider it infinitely large). Its thickness is . The charge densities on the upper and the lower surfaces are both equal to . The goal of this problem is to find the electric field (magnitude and direction) at ...
Sunday, February 24, 2013 at 10:31pm by P

Physical Science
Hello, I need some help with the following question. Thank You To use your left hand to determine the direction of the voltage developed in a moving conductor in a stationary magnetic field, you must point your ? A.thumb in the direction of the magnetic flux B.thumb in the ...
Sunday, March 23, 2008 at 10:02pm by Mandi

Electromagnetism
A particle with a mass of 6.64x10^-27 kg and a charge of +3.2x10^-19 C is accelerated from rest through a potential difference of 2.45x10^6 V. the particle then enters a uniform magnetic field of strength 1.60 T. a) Find the particle's gain in KE as it moves through the ...
Thursday, April 18, 2013 at 1:48am by Anonymous

Physics
There are two situations in which it possible for a charged particle to be in a magnetic field but not experiencing a magnetic force. What are they? Given that Fm=qVBsintheta, I am going to say 1. If the particle is NOT in motion. 2. The direction of currect and the direction ...
Monday, December 7, 2009 at 8:14pm by Connor

Physics
I don't know if my other post went through or not, so I'm reposting it here. The first question I didn't know the answer to and the second one was worded in a way that I couldn't understand. 1. With respect to an electric and a magnetic field, how does the direction of a ...
Saturday, March 29, 2008 at 6:54pm by Emily

physics
A charge of -8.9 C is traveling at a speed of 7.8 106 m/s in a region of space where there is a magnetic field. The angle between the velocity of the charge and the field is 60. A force of magnitude 4.0 10-3 N acts on the charge. What is the magnitude of the magnetic field?
Saturday, February 5, 2011 at 5:18pm by Anonymous

physics
A moving proton with a speed of 0.3 m/s experiences a force of 1.5*10^-20N, when it enters at a right angle to the direction of the magnetic field. What is the magnitude of the magnetic field? Choose one answer. a. 0.3 Tesla b. 0.5 Tesla c. 0.9 Tesla d. 1.3 Tesla
Saturday, June 4, 2011 at 9:55pm by ashley --- HELP PLEASEE!!!

Physics
A flat circular coil with 103 turns, a radius of 3.96 10-2 m, and a resistance of 0.456 Ω is exposed to an external magnetic field that is directed perpendicular to the plane of the coil. The magnitude of the external magnetic field is changing at a rate of ΔB/Δ...
Wednesday, March 20, 2013 at 9:29am by bbbgen

Physics
A flat circular coil with 103 turns, a radius of 3.96 10-2 m, and a resistance of 0.456 Ω is exposed to an external magnetic field that is directed perpendicular to the plane of the coil. The magnitude of the external magnetic field is changing at a rate of ΔB/Δ...
Wednesday, March 20, 2013 at 7:38pm by bbbgen

physics
Use the Biot Savart law to compute the magnetic field at the center of a metallic ring. the ring has a radius of 10^-6 m and is connected to two infinite wires. the current in the wires is 1 amp. the ring is lying in the [x,y,z= 0 ] plane. the first wire is attached to the ...
Tuesday, May 21, 2013 at 12:32pm by karan

physics
A 0.2 kg conductor of length 0.8 m carries 2 ampere current to the right in a magnetic field. What is the magnitude and the direction of the magnetic field acting on the conductor if the net force on the rod is zero? (Assume that the rod is hung by two insulating supports.)
Sunday, June 12, 2011 at 4:26pm by unknown

physics
Suppose that youre facing a straight current-carrying conductor, and the current is flowing toward you. The lines of magnetic force at any point in the magnetic field will act in A. the same direction as the current. B. a clockwise direction. C. the direction opposite to the ...
Monday, February 6, 2012 at 11:19pm by norman

Physics
An electric generator contains a coil of 100 turns of wire, each turn forming a rectangular loop 50cm by 30cm. The coil is placed entirely in a uniform magnetic field with magnitude, B = 3.5T and direction initially perpendicular to the coil's plane. What is the maximum value ...
Wednesday, November 24, 2010 at 12:31pm by Ri

physics
There is a very large horizontal conducting plate in the x-y plane (consider it infinitely large). Its thickness is h . The charge densities on the upper and the lower surfaces are both equal to +σ. The goal of this problem is to find the electric field (magnitude and ...
Wednesday, February 27, 2013 at 1:46am by Anonymous

jake
Suppose that you're facing a straight current-carrying conductor, and the current is flowing toward you. The lines of magnetic force at any point in the magnetic field will act in [A. a counterclockwise direction.] B. a clockwise direction. C. the direction opposite to the ...
Tuesday, March 6, 2012 at 6:05pm by physical science

Physics
At a certain location, the Earth's magnetic field has a magnitude of 5.90E-5 T and points in a direction that is 71.6 below the horizontal. Calculate the magnitude of the magnetic flux through the top of a desk at this location that measures 132 cm by 83.3 cm.
Monday, October 18, 2010 at 10:38am by VJC

Physics
There is a very large horizontal conducting plate in the x-y plane (consider it infinitely large). Its thickness is h . The charge densities on the upper and the lower surfaces are both equal to +σ. The goal of this problem is to find the electric field (magnitude and ...
Monday, February 25, 2013 at 8:41am by P

Physics
A square conducting loop with sides of length L is rotation at a constant angular speed of, w (omega), in a uniform magnetic field of magnitude B. At time t=0, the loop is oriented so that the direction normal to the loop is aligned with the magnetic field. Find the expression...
Sunday, November 13, 2011 at 2:46am by Jasmine

Physics
A square conducting loop with sides of length L is rotation at a constant angular speed of, w (omega), in a uniform magnetic field of magnitude B. At time t=0, the loop is oriented so that the direction normal to the loop is aligned with the magnetic field. Find the expression...
Sunday, November 13, 2011 at 1:47pm by Jasmine

Physics
A square conducting loop with sides of length L is rotation at a constant angular speed of, w (omega), in a uniform magnetic field of magnitude B. At time t=0, the loop is oriented so that the direction normal to the loop is aligned with the magnetic field. Find the expression...
Sunday, November 13, 2011 at 10:15pm by Jasmine

Physics
A square conducting loop with sides of length L is rotation at a constant angular speed of, w (omega), in a uniform magnetic field of magnitude B. At time t=0, the loop is oriented so that the direction normal to the loop is aligned with the magnetic field. Find the expression...
Monday, November 14, 2011 at 8:15pm by Jasmine

Physics - electric field intesity (check +help)
Points A and B are 13.0 apart. A charge of +8.0mu is placed at A and another charge at +5.0mu is placed at B. Point P i located 5.0cm from A and 12.0cm from B. What is the magnitude and direction of the electric field intensity at P? Ans: i got the magnitude as 2.9*10^, ...
Saturday, December 4, 2010 at 3:50pm by Farah

physics
the magnitude of earths magnetic field at the magnetic north pole is 61/1000000.(a) determine the magnitude of the dipole moment of the earth (b)suppose an additional field due to the current in wire around the equator is used to make the net field at the pole zero,what is the...
Tuesday, May 1, 2012 at 12:59pm by musa

Physics (urgent please)
Two parallel wires are carrying 5A and are separated by 2.0 m. if the currents are in opposite directions, what is the magnitude of the magnetic field halfway between them? Someone please help as I can't figure out the question. Thanks, They are asking for the field between ...
Wednesday, June 20, 2007 at 12:58pm by James P.

Physics
The Earth has an electric field with magnitude roughly 100 N/C at its surface. A) Assuming there is a point charge at the earth's center creating this field, how much charge does the earth posses? Treat the earth as a sphere of radius 6.37 * 10^6 m. B)As the earth orbits the ...
Thursday, March 6, 2008 at 7:54pm by jenish

Physics- magnetism
The four wires in the figure are tilted at 20degrees with respect to the field direction. Each carries a 4.5 current and is 0.35m long. What is the magnitude and direction of the force on each wire? (the answer is in terms of B-magnetic field) Image: h t t p: //p osti mage. or...
Monday, March 7, 2011 at 10:28am by Bob

physics
A coil of wire consists of 20 turns, or loops, each of which has an area of 1.5 x 10-3 m 2. A magnetic field is perpendicular to the surface of each loop at all times, so that = o = 0. At time to = 0s, the magnitude of the field at the location of the coil is Bo = 0.050 T...
Saturday, September 17, 2011 at 5:34am by kait

PHYSICS
he magnetic coils of a tokamak fusion reactor are in the shape of a toroid having an inner radius of 0.700 m and an outer radius of 1.30 m. The toroid has 800 turns of large-diameter wire, each of which carries a current of 12.0 kA. (a) Find the magnitude of the magnetic field...
Tuesday, November 5, 2013 at 12:53am by taylor

physics
The solar wind is a thin, hot gas given off by the sun. Charged particles in this gas enter the magnetic field of the earth and can experience a magnetic force. Suppose a charged particle traveling with a speed of 9.80 x 10^6 m/s encounters the earth's magnetic field at an ...
Tuesday, February 8, 2011 at 7:24pm by aml

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