Thursday
April 17, 2014

Search: Current/Magnetic force

Number of results: 28,471

PHYSICS
A closed loop carrying a current I lies in the xy plane. A uniform magnetic field is directed along the positive y axis. Which of the following statements best describes the total magnetic force on the current loop? a)The total magnetic force is proportional to the area the ...
Saturday, December 14, 2013 at 7:31pm by Aaka

physics
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. 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
Please help me with these choose the best answers since I'm not sure of my answers. A current element produces a magnetic field in the region surrounding it. at any point in space, the magnetic field produced by this current element points in a direction that is a) radial from...
Sunday, October 23, 2011 at 9:31pm by Jessica

Physics
Please help me with these choose the best answers since I'm not sure of my answers. A current element produces a magnetic field in the region surrounding it. at any point in space, the magnetic field produced by this current element points in a direction that is a) radial from...
Sunday, October 23, 2011 at 10:02pm by Jessica

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

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
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
1)A current-carrying conductor is kept at right angles to the direction of a magnetic field. What happens to the force acting on the wire if the strength of the magnetic field doubles? the force is doubled. 2)How much current is required to produce a force of 0.96 N on a 75 cm...
Friday, April 11, 2008 at 3:50pm by Jon

Physics
A 3 m long wire carrying a current of 1 A through a magnetic field of magnitude 17 T experiences a force of 8 kN entirely due to the current passing through the magnetic field. what angle does the wire make with the magnetic field?
Saturday, March 3, 2012 at 3:05pm by Fatih

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

Current/Magnetic force
A high voltage power line carries a current of 110 A at a location where the Earth's magnetic fields has a magnitude of 5.9 x 10^-4 T and points north at an angle of72 degrees below the horizontal (toward the earth surface). Find the direction and magnitude of the magnetic ...
Thursday, April 5, 2012 at 1:55pm by Matt

Physics
a magnetic rail gun is constucted to give a space vehicle its intial launch velocity, thereby reducing the amount of fuel the vehicle has to carry. it consist of two very long parallel rails across which is positioned a large current carrying crossbar 7.65 m long. The crossbar...
Saturday, May 4, 2013 at 5:32pm by Jane

magneismt
closed loop carrying a current lies in the plane. A uniform magnetic field is directed along the positive y axis. Which of the following statements best describes the total magnetic force on the current loop?
Tuesday, December 17, 2013 at 2:27pm by mano

Physics
Yes to both questions. Current in a straight wire produces circular concentric magnetic lines of force around the wire. A changing magnetic field produced circular lines of electric force around the magnetic lines of force.
Saturday, March 29, 2008 at 1:24am by drwls

physics
A high-voltage power line carries a current of 120 A at a location where the Earth's magnetic field has a magnitude of 0.577 G and points to the north, 70.8° below the horizontal. Calculate the magnitude of the magnetic force exerted on a 258 m length of wire if the current in...
Monday, October 11, 2010 at 2:44pm by VJC

Physics
A horizontal wire of length 0.48 m, carrying a current of 6.8 A, is placed in a uniform external magnetic field. When the wire is horizontal, it experiences no magnetic force. When the wire is tilted upward at an angle of 19° it experiences a magnetic force of 4.00 10-3 N. ...
Sunday, February 12, 2012 at 6:24pm by Anne

physics
A horizontal wire of length 0.78 m, carrying a current of 6.8 A, is placed in a uniform external magnetic field. When the wire is horizontal, it experiences no magnetic force. When the wire is tilted upward at an angle of 20°, it experiences a magnetic force of 8.3 x 10-3 N. ...
Friday, February 24, 2012 at 4:20pm by Anonymous

Physics
How the force on a current-carrying conductor can be used to measure the flux density of a magnetic field using a current balance? If the wire is attached to pivot point, the force creates a torque moving the wire. An indicator can be attached to the wire, and its motion a ...
Friday, February 16, 2007 at 2:03am by Ishani

Physics concept question
A long straight horizontal wire carries a current I = 2.10 A to the left. A positive 1.00 C charge moves to the right at a distance 4.50 m above the wire at constant speed v = 2250 m/s. What are the magnitude and the direction of the magnetic force on the charge? h t tp:// ...
Monday, March 7, 2011 at 2:10pm by Robert

physics
Assume the Earth's magnetic field is 51.3 µT northward at 60.0° below the horizontal in a particular city. A tube in a neon sign stretches between two diagonally opposite corners of a shop window—which lies in a north–south vertical plane—and carries current 35.7 mA. The ...
Wednesday, February 20, 2013 at 9:42pm by Matteo

College physIcs
An electron travels at a speed of 4.0×104 m/s through a uniform magnetic field whose magnitude is 1.4×10−3 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
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

Psysics (Magnetism)
A current-carrying wire is placed in a uniform magnetic field, but there is no magnetic force on it. How is this possible?
Tuesday, April 24, 2012 at 7:21pm by Brooke

physics
a current-carrying wire is oriented at right angles to a uniform magnetic field. if the lenght of the wire is 0.50m and it experiences a force at 0.90n while carrying a current of 4.0a. what is the strength of the magnetic field?
Wednesday, December 1, 2010 at 8:31am by mj

Physics
A current-carrying wire is oriented at right angles to a uniform magnetic field. If the length of the wire is 0.50 m and it experiences a force of 0.90 N while carrying a current of 4.0 A, what is the strength of the magnetic field? I did the work and got: 0.45 ...???
Wednesday, April 22, 2009 at 2:07pm by sophie

Physics
I recommend you use your right hand rules for the magnetic force. In the force of E, the particle is attracted/repelled in the direction of E. In magnetic terms, the moving particle is moved ninety degrees from the direction of current.
Saturday, March 29, 2008 at 6:54pm by bobpursley

College Physics Homework. Please help!
A metal bar with a length of 0.30 m and mass of 0.5 kg is free to slide (no friction) on a set of vertical rails. The rails and bar together have a resistance of 500 ohms. The rails lie in a horizontal magnetic field with a strength of 0.04 T. The mass falls under the combined...
Monday, May 7, 2012 at 7:10pm by Rich

Physics
Magnetic field in a loop---- B= B_1 +B_2 yo have to calculate 2 magnetic fields for a current negative(see Y axis) ( - ) plus current positive For a current I=0.2 and a=6cm Bz= 4.7125*10^(-6)
Friday, April 26, 2013 at 1:20pm by Niznkl

physics
A wire of length 11 cm carries a current of 1.1 A. When the wire is placed so that the current passes through the wire along the positive x direction, the force on the wire due to an external magnetic field B is measured to be -(0.04 N)j. When the wire is moved so the current ...
Saturday, February 27, 2010 at 8:10pm by Sandhya

physics
check which of the following modifications to a solenoid would be most likely to decrease the strength of its magnetic field? a. removing its iron rod core adn increasing teh number of coils b. increasing the current and reducing the number of coils c. reducing teh number of ...
Thursday, March 12, 2009 at 10:45pm by physics

Physics
An electrostatic force of 5 N exists between two identical point charges, each of mass 0.01 g, placed 4 mm apart. a.) Find the magnitude of each charge. b.) One of these charges is placed into a magnetic field. Assuming that the charge has a speed of 50 m/s and travels a ...
Monday, June 12, 2006 at 3:26pm by Nathaniel

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
The relationship between magnetic force and magnetic pole strength is similar to the relationship between which of the following?. A) force, mass, and distance as in Newton's law of gravity.B) All of these.C) current, voltage, and resistance as in Ohm's law.D) Two of these.E) ...
Monday, April 16, 2012 at 4:49am by Christy

physics
A horizontal rod with a length of 0.250 is mounted on a balance and carries a current. At the location of the rod a uniform horizontal magnetic field has a magnitude of 6.70×10−2 and direction perpendicular to the rod. The magnetic force on the rod is measured by the ...
Monday, October 31, 2011 at 10:21pm by Andrea

physics
the magnetic force on a straight 0.15m segment of wire carrying a current of 4.5 A is 1.0 N. What is the magnitude of the component of the magnetic field that is perpendicular to the wire?
Thursday, May 17, 2012 at 9:10am by ana

physics
A current-carrying conductor experiences a force upward in a magnetic field that acts perpendicularly to and out of the plane of the paper. What is direction of the current in the conductor? Choose one answer. a. The current in the conductor is toward right. b. The current in ...
Saturday, June 4, 2011 at 9:56pm by ashley --- HELP PLEASEE!!!

Physics
1)When the currents in two parallel metal conductors are in the same direction, the conductors ___ each other. A)attract B)repel C)do not exert any force D)exert forces that are perpendicular to I got A. I couldnt find where it talks about directions of parallel metal ...
Friday, April 11, 2008 at 3:40pm by Jon

physics
The relationship between magnetic force and magnetic pole strength is similar to the relationship between which of the following?. A) force, mass, and distance as in Newton's law of gravity.B) All of these.C) current, voltage, and resistance as in Ohm's law.D) Two of these.E) ...
Saturday, April 14, 2012 at 5:01pm by Christy

physics
The magnetic force on a straight 0.36 m segment of wire carrying a current of 4.5 A is 0.38 N. What is the magnitude of the component of the magnetic field that is perpendicular to the wire? Answer in units of T
Thursday, April 25, 2013 at 2:06am by Anonymous

Science
Heat flows from hot to cold. Objects attract each other, called gravitaional force. Opposite electrical charges attract, like charges repel. A electrical current creates a magnetic field. A changing magnetic field can induce a current in a wire. Mass and energy are equivalent...
Thursday, September 18, 2008 at 9:11pm by bobpursley

Physics
The magnetic force on a straight wire .69 m long is 1.5 x 10^-3 N. The current in the wire is 16.9 A. What is the magnitude of the magnetic field that is perpendicular to the wire?
Monday, February 27, 2012 at 10:30pm by Doryn

Physics- Charge in electromagnetic field
Correct on the negative charge of the antiproton. The magnetic force is q V x B (vector cross product) and the electric force is q E (scalar multiplication of E by a constant). The magnetic force is in the direction of the red arrows (from the right-hand rule, with negative q...
Monday, March 7, 2011 at 1:37pm by drwls

physics
A 6 N force acts on a current carrying wire of length 0.5 m that is placed in a 1.5 T external magnetic field. What is the current in the wire?
Tuesday, March 12, 2013 at 11:56am by Billy

Physics concept question
B: The current-carrying wire produces a magnetic field at the location of the charge. This magnetic field exerts a force on the charge.
Monday, March 7, 2011 at 2:10pm by Christina

physics
A wire that is 70 cm long, carrying a current of 6.5 A, is at right angles to a uniform magnetic field. The magnitude of the force acting on the wire is 0.60 N. What is the strength of the magnetic field?
Sunday, March 10, 2013 at 10:09am by Jeff

Current/Magnetic force
21
Thursday, April 5, 2012 at 1:55pm by 2

Physics
A conductor of length 2m carrying a 1.5A current experiences a force of 2.2 N. What is the magnitude of the magnetic field that acts perpendicular to the flow of current in the conductor?
Saturday, February 2, 2013 at 9:51pm by fred

physics
Two insulated wires, each 2.70 m long, are taped together to form a two-wire unit that is 2.70 m long. One wire carries a current of 7.00 A; the other carries a smaller current I in the opposite direction. The two wire unit is placed at an angle of 77.0° relative to a magnetic...
Wednesday, February 26, 2014 at 1:07am by Dee

physical
A proton resistor spring system in a magnetic field going out of the page has a mass of proton 1.67*10^-27 kg, a spring constant k=500 N/m and the resistor has r=5Ω. The magnetic field strength is 0.8T. a) When released from rest, calculate the maximum displacement. b) ...
Tuesday, March 30, 2010 at 10:30pm by Thomas

science-electromagnetism
The magnetic field does NOT depend upon the local current density. The magnetic field depends upon the current density in the surrounding environment, wherever current is flowing. Read about the Biot-Savart law for more information.
Saturday, September 17, 2011 at 9:13am by drwls

physics
The force on a wire is a maximum of 7.33E-2 N when placed between the pole faces of a magnet. The current flows horizontally to the right and the magnetic field is vertical. The wire is observed to "jump" toward the observer when the current is turned on. If the pole faces ...
Monday, October 11, 2010 at 2:42pm by VJC

Physics
The force on a wire is a maximum of 6.5E-2 N when placed between the pole faces of a magnet. The current flows horizontally to the right and the magnetic field is vertical. The wire is observed to "jump" toward the observer when the current is turned on. If the pole faces have...
Sunday, December 2, 2012 at 10:22pm by Lorii

physics
A 36 cm long copper wire carries a current of 6.0 A and weighs 0.45 N. A certain magnetic field is strong enough to balance the force of gravity on the wire. What is the strength of the magnetic field?
Thursday, March 7, 2013 at 12:58pm by Anonymous

physics
A 36 cm long copper wire carries a current of 6.0 A and weighs 0.45 N. A certain magnetic field is strong enough to balance the force of gravity on the wire. What is the strength of the magnetic field?
Sunday, March 10, 2013 at 10:09am by Jeff

physics
A proton resistor spring system in a magnetic field going out of the page has a mass of proton 1.67*10^-27 kg, a spring constant k=500 N/m and the resistor has r=5Ω. The magnetic field strength is 0.8T. a) When released from rest, calculate the maximum displacement. b) ...
Tuesday, March 30, 2010 at 10:31pm by Thomas

physics
Current passing through a conductor is increased from 10 A to 15 A. This decreases the strength of the magnetic field produced by the conductor. True The direction of the force on doubly ionized helium atoms (alpha particles) moving at right angles to a magnetic field is ...
Sunday, May 24, 2009 at 7:16pm by sally

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 - Electromagnetism
(a) Magnetic field of the long current carrying wire according to Biot-Savert Law is B=μₒI/2•π•a The desired point is separated by distance “x” from the 1st current and by distance (d+x) from the 2nd current (along y-axis). μₒI1/2•π•x=μ&#...
Wednesday, July 25, 2012 at 2:17pm by Elena

Physics
Yes, because the magnetic field flux through current loops changes faster. The strength of the magnetic field stays about the same, because it is established by permament magnets or fixed-current electromagnets.
Wednesday, February 13, 2008 at 11:12pm by drwls

physics
A wire of length 0.655 m carries a current of 21.0 A. In the presence of a 0.470-T magnetic field, the wire experiences a force of 5.46 N. What is the angle (less than 90°) between the wire and the magnetic field?
Tuesday, November 10, 2009 at 2:07am by Anonymous

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

magnetic field
A square loop with resistance R=0.001 Ohms,mass 1.0 gram, and side length 1.0 m is falling into a region of uniform magnetic field. The magnetic field has strength 1 Gauss and is pointing out of the page. The speed of the loop just before it enters the region with the uniform ...
Monday, June 7, 2010 at 3:17pm by Physics

KUSSSESSS
Consider a wire of length L = 0.30 m that runs north-south on a horizontal surface. There is a current of I = 0.50 A flowing north in the wire. (The rest of the circuit, which actually delivers this current, is not shown.) The Earth's magnetic field at this location has a ...
Wednesday, February 2, 2011 at 11:53pm by anip

physics
can electric current be generated by magnetic force?
Wednesday, May 5, 2010 at 1:30pm by Larry

physics
An electric power line carries a current of 1600 A in a location where the earth's magnetic field is 4.0*10-5 T. The line makes an angle of 75° with respect to the field. Determine the magnitude of the magnetic force on a 130 m length of line.
Sunday, February 10, 2008 at 8:56pm by rick

Physics
A conductor of length 2m carrying a 1.5A current experiences a force of 2.2 N. What is the magnitude of the magnetic field that acts perpendicular to the flow of current in the conductor?
Monday, February 11, 2013 at 8:41pm by physics student

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

(right hand rules list) please read
Fist right-hand rule: is a method you can use to determine the direction of a magnetic field relative to the direction of conventional current. Second right-hand rule: is a method you can use to determine the direction of the field produced by an electromagnet relative to the ...
Friday, April 11, 2008 at 4:14pm by Jon

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
current is induced in the secondary side by a changing magnetic field. If one wants a continuous output, then the changing magnetic field has to continuously change, thus, alternating current.
Monday, May 28, 2012 at 11:04am by bobpursley

Physics pls help
the current in coil 2 will generate a magnetic field that opposes the magnetic field from coil 1. Use your right hand rules to figure out the direction of the current.
Monday, December 16, 2013 at 10:21pm by bobpursley

science
a region of magnetic force is known as a _______________ magnetic field. You could also be thinking of magnetic pole.
Wednesday, January 17, 2007 at 9:30pm by shaleem

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
A current-carrying conductor of length 0.8 m is placed perpendicular to the direction of the magnetic field of 0.6 Tesla. What is the value of the current in the conductor if the conductor experiences a force of 1.2 N?
Sunday, January 27, 2013 at 9:01pm by Physics fail

physics
The force on a wire is a maximum of 6.00\times 10^{ - 2} {\rm{N}} when placed between the pole faces of a magnet. The current flows horizontally to the right and the magnetic field is vertical. The wire is observed to "jump" toward the observer when the current is turned on.
Sunday, March 25, 2012 at 11:07pm by ben

science
The question stinks. When net magnetic moments are aligned, the magnetic field is occuring. Before alignment, the magnetic moments are of random direction, and the overall net magnetic force is zero.
Saturday, February 12, 2011 at 7:38pm by bobpursley

physics
A loop of wire is lying flat on a tabletop. A uniform magnetic field is directed vertically UPWARDS such that it is perpendicular to the tabletop (and the loop). Beyond the edge of the table, the magnetic field is zero. Imagine that you are looking DOWN on the loop from above...
Tuesday, February 22, 2011 at 10:53pm by Kelly

physics
A loop of wire is lying flat on a tabletop. A uniform magnetic field is directed vertically UPWARDS such that it is perpendicular to the tabletop (and the loop). Beyond the edge of the table, the magnetic field is zero. Imagine that you are looking DOWN on the loop from above...
Tuesday, February 22, 2011 at 10:53pm by Kelly

physics
A loop of wire is lying flat on a tabletop. A uniform magnetic field is directed vertically UPWARDS such that it is perpendicular to the tabletop (and the loop). Beyond the edge of the table, the magnetic field is zero. Imagine that you are looking DOWN on the loop from above...
Tuesday, February 22, 2011 at 10:54pm by Kelly

physics
A loop of wire is lying flat on a tabletop. A uniform magnetic field is directed vertically UPWARDS such that it is perpendicular to the tabletop (and the loop). Beyond the edge of the table, the magnetic field is zero. Imagine that you are looking DOWN on the loop from above...
Tuesday, February 22, 2011 at 10:56pm by Kelly

physics
A loop of wire is lying flat on a tabletop. A uniform magnetic field is directed vertically UPWARDS such that it is perpendicular to the tabletop (and the loop). Beyond the edge of the table, the magnetic field is zero. Imagine that you are looking DOWN on the loop from above...
Tuesday, February 22, 2011 at 10:58pm by Kelly

physics
A 0.050-m-long wire is carrying a current of 2.0 A at right angles to a 0.15-T magnetic field. What is the magnitude of the force exerted by the magnetic field on the wire? A. 0.015 N B. 0.0037 N C. 0.67 N D. 6.0 N It's A right? 0.05*2*0.15
Thursday, May 21, 2009 at 11:05am by sally

Physics
Suppose that the magnetic field o fthe Earth were due to a single current moving in a circle of radius 2988 km through the earth’s molten core. The strength of the Earth’s magnetic field on the surface near a magnetic pole is about 6.00E-5 T. About how large a current would be...
Sunday, October 23, 2011 at 11:56pm by Jessica

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
A wire of length 0.655m carries a current of 21.0A. In the presence of a 0.470-T magnetic field, the wire experiences a force of 5.46N. What is the angle (less than 90degrees) between the wire and the magnetic field? I NEED HELP WITH THIS PROBLEM!!!THANKS!!
Tuesday, April 1, 2008 at 3:26pm by Malisa

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
A flat circular coil with 192 turns, a radius of 2.35 x 10-2 m, and a resistance of 0.359 Ù 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 ÄB/Ät = 0.696 T/s...
Thursday, March 7, 2013 at 9:14pm by Anonymous

physics 30
A current-carrying conductor that is 8.00x10^-2 m long is placed perpendicular to a magnetic field that has a strength of 6.00x10^-3 T. During a 3.00s time interval, 7.50x10^19 electrons pass a point in the conductor. The magnitude of the average magnetic force exerted on the ...
Wednesday, March 21, 2012 at 12:36am by sarah

Physics
A 45-m length of wire is stretched horizontally between two vertical posts. The wire carries a current of 67 A and experiences a magnetic force of 0.15 N. Find the magnitude of the earth's magnetic field at the location of the wire, assuming the field makes an angle of 51.5° ...
Monday, April 1, 2013 at 2:44pm by Anonymous

urgent physics
A power line carries a current of 110 A at a location where the Earth's magnetic field has a magnitude of 0.37 Gauss (0.37·10-4 T) and points due north, very nearly parallel to the ground. Find the direction and magnitude of the magnetic force exerted on a 270 m length of the ...
Friday, November 4, 2011 at 3:40pm by sonia

Physics
1)A 0.050 m long wire is carrying a current of 2.0 A at right angles to a 0.15 T magnetic field. What is the magnitude of the force exerted by the magnetic field on the wire? F=ILB (0.050)(2.0)(0.15) 0.015 N 2)Which device is used to measure very small currents? galvanometer
Friday, April 11, 2008 at 3:54pm by Jon

physics
A horizontal rod with a length of 0.250 is mounted on a balance and carries a current. At the location of the rod a uniform horizontal magnetic field has a magnitude of 6.70×10−2 and direction perpendicular to the rod. The magnetic force on the rod is measured by the ...
Monday, October 31, 2011 at 10:21pm by Andrea

physics
A flux density of 1.2testa is produced in piece of castle by a magnetic force 1250a/m. Find the relative permability of the steel under these conditions. B. Determine the magnetic flux strenght and magnetic force required to produce a flux density of 0.25testa in an air gap of...
Saturday, March 31, 2012 at 2:17pm by Isaiah. c

magnetism
magnetic moment= current(I)* area(A) = 20*10^-3* pi*2^2 = 0.2513 torque= magnetic moment*magnetic field(B) = 0.2513*1.2 =0.301
Wednesday, November 20, 2013 at 1:05am by roshni

physics
what is the difference between electromagnetic induction and electromagnetism? are they closely connected? Electromagnetism is creating a magnetic field from a electric current. Induction is transfering from that created magnetic field a current in a secondary wire.
Monday, June 4, 2007 at 9:21pm by chris

Physics--PLZ HELP!
look up the right hand rule on magnetic field, current, and force
Tuesday, February 26, 2013 at 5:59pm by bobpursley

Nautical Studies
I understand it is a popular misconception that a magnetic compass points to the magnetic north pole. In fact a magnetic compass aligns itself with the magnetic lines of force in its own location. Here in the UK these lines of force seem to coincide very closely with the ...
Wednesday, October 31, 2007 at 6:17am by Mike

Physics
Suppose that the current is created the magnetic field, that is similar to the magnetic field of the very long wire with the current. The magnetic field in this case according to the Biot-Savart Law is B=μₒ•I/2•π•r, then I =2•π•B•r/ μₒ = 2•π...
Wednesday, June 6, 2012 at 1:32pm by Elena

science
I think the it was magnetic force that pulled them up, if I am recalling that correctly, because magnetic force is related to magnets. Sorry, I don't know how to help you with your second question. I hope I helped you a little!
Tuesday, February 3, 2009 at 3:46pm by Katie

Physics 3
A 2.3-keV proton is moving horizontally and passes perpendicular to the Earth’s 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

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