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October 31, 2014

Search: electric

Number of results: 2,668

Applied Physics
Which is a vector quantity? electric energy electric charge electric power electric field intensity
May 29, 2011 by Scott

Physics
What is the difference between electric force, electric potential energy, electric field strength, electric potential, and electric potential difference?
July 20, 2012 by KnowsNothing

Physics electric force, please help!
A charge of +Q and a charge of +2Q are separated by a distance r. The electric force of +2Q on +Q has a magnitude of F and is directed to the right. Which one of the following statements is correct regarding the electric force of +Q on +2Q? (A)The electric force of +Q on +2Q ...
November 8, 2012 by Matt

Physics
A point charge Q1=-2 microcoulomb is located at x=0, and a point charge Q2=+8 microcoulomb, is placed at x=-0.5 on the x axis of a cartesian coordinate system.The goal of this problem is to determine the electric field,at various points along the x axis. a)What is electric ...
February 25, 2013 by Phy

electric
When an electron moves from A to B along an electric field line in Fig. 24-29, the electric field does 3.66 x 10-19 J of work on it. What are the electric potential differences (a)VB - VA, (b)VC - VA, and (c)VC - VB? in the picture there r four field lines going from down to ...
April 14, 2009 by sweety

Physics II
When an electron moves from A to B along an electric field line, the electric field does 3.94 x 10^-19 J of work on it. What are the electric potential differences (a) Vb - Va, (b) Vc - Va, and (c) Vc - Vb?
February 13, 2011 by Scott

physics
Electric current is a flow of electric charge that moves due to an electric pressure is called what?. A) wattage.B) voltage.C) All of these to some degree.D) None of these.E) amperage. I chose ampere, this is what my textbook tells me and I got it wrong
April 14, 2012 by Christy

algebra based physics
Electric bees. As they fly through the air, honeybees can pick up a small amount of electric charge. Suppose a 0.12-g bee acquires a charge of 65pC. How many excess electrons has the bee acquired? Find the magnitude of the electric force on the bee in the electric field just ...
February 10, 2014 by jrfannin

physics
The electric potential at x = 3.0 m is 120 V, and the electric potential at x = 5.0 m is 190 V. What is the electric field in this region, assuming it's constant?
January 29, 2010 by Cal

math/physics
An electron moving through an electric field experiences an acceleration of 6.1 multiplied by 103 m/s2. (a) Find the electric force acting on the electron. (b) What is the strength of the electric field?
January 11, 2010 by jake

physics
explain the relationship between contours of constant potential and the electric field direction. why is the electric field a vector quantity while the electric potential is a scalar?
February 1, 2010 by jake

electric
When an electron moves from A to B along an electric field line in Fig. 24-29, the electric field does 3.66 x 10-19 J of work on it. What are the electric potential differences (a)VB - VA, (b)VC - VA, and (c)VC - VB? in the picture there r four field lines going from down to ...
April 14, 2009 by sweety

PHYSICS
1. Why is an electric field considered to be a vector quantity? 2. Draw the electric field around an electric dipole of +1 C and -1 C 3. How many electrons have been removed from a positively charged object if it has a charge of 1.5 x 1011 C? 4. A particle with a charge - 1....
December 21, 2012 by Hayden

electric fields, showed work
imagine sitting a distance r from a charge q. you measure both the electric field and electric potential. now imagine that the charge is halved and you move three time as far away. you measure the field and potential again. b what factor has the electric field changed? by what...
January 28, 2009 by Anonymous

physics
The electric potential in a certain region is V = a x2 + b x + c, where a = 15 V/m2, b = −13 V/m, and c = 67 V. 1)Determine the electric field at x = 4 m. 2)Determine the position where the electric field is zero.
September 24, 2011 by physics

Physics
Gold ions (Au+) are accelerate to high speeds using electric fields. These ions are then passed through a region where uniform electric E and magnetic B fields are present. If the ions are traveling to the right, which configuration of E and B will serve as a velocity selector...
March 13, 2010 by Sandra

Physics
Gold ions (Au+) are accelerate to high speeds using electric fields. These ions are then passed through a region where uniform electric E and magnetic B fields are present. If the ions are traveling to the right, which configuration of E and B will serve as a velocity selector...
March 15, 2010 by mm.

physics
Gold ions (Au+) are accelerate to high speeds using electric fields. These ions are then passed through a region where uniform electric E and magnetic B fields are present. If the ions are traveling to the right, which configuration of E and B will serve as a velocity selector...
March 13, 2010 by lauren

physics
A circular surface with a radius of 0.053 m is exposed to a uniform external electric field of magnitude 1.48 104 N/C. The electric flux through the surface is 72 N m2/C. What is the angle between the direction of the electric field and the normal to the surface?
September 8, 2009 by amber

Physics
A circular surface with a radius of 0.058 m is exposed to a uniform external electric field of magnitude 1.49 104 N/C. The electric flux through the surface is 74 N m2/C. What is the angle between the direction of the electric field and the normal to the surface?
September 6, 2013 by Sarah

Physics
A circular surface with a radius of 0.058 m is exposed to a uniform external electric field of magnitude 1.49 104 N/C. The electric flux through the surface is 74 N m2/C. What is the angle between the direction of the electric field and the normal to the surface?
September 6, 2013 by Sarah

Physics
A circular surface with a radius of 0.058 m is exposed to a uniform external electric field of magnitude 1.49 104 N/C. The electric flux through the surface is 74 N m2/C. What is the angle between the direction of the electric field and the normal to the surface?
September 6, 2013 by Sarah

Physics
A circular surface with a radius of 0.058 m is exposed to a uniform external electric field of magnitude 1.49 104 N/C. The electric flux through the surface is 74 N m2/C. What is the angle between the direction of the electric field and the normal to the surface?
September 8, 2013 by Sarah

physics
1.)In an electric potential the charge is moving from infinity to a given point. Is that infinity point is within the electric field or outside of it? 2.)Is electric potential difference and voltage are same? 3.)Are electric potential and voltage same?
October 5, 2013 by ramesh reddy

Physics
A proton is moving parallel to a uniform electric field. The electric field accelerates the proton and increases its linear momentum to 5.0 10-23 kg m/s from 1.4 10-23 kg m/s in a time of 6.5 10-6 s. What is the magnitude of the electric field?
August 30, 2007 by Mary

PHYSICS URGENT
2. A point charge of +1.0 C is moved in the direction of an electric field, and it has a change in electric potential difference energy of 10.0 J. What was the change in electric potential difference? 1 C = 10-6 C (Points : 1) -1.0 10^8 V -1.0 10^7 V +1.0 10^7 V +1.0...
May 1, 2014 by Hannah

Physics
Which of the following statements is true about electric forces? A. Electric forces cause objects to only attract each other. B. Electric forces cause objects to only repel each other. C. Electric forces cause objects to repel or attract each other. D. Electric forces have no ...
April 7, 2009 by sophie

physics
please check this: Which sentence best describes electrical conductors? a. electrical conductors have low mass density b. electrical conductors have high tensile strength c. electrical conductors have electric charges that move freely d. electrical conductors are poor heat ...
March 14, 2009 by physics

physics
A flat horizontal surface with an area of 650 cm2 is inside a uniform electric field of 2.99104 N/C. The angle between the area vector and the electric field is 14.8. What is the electric flux through the surface?
January 30, 2011 by Ana

Physics
A 5.0 C point charge is moved within an electric field and has an electric potential energy change of 10.0 J. What is the electric potential difference before and after the charge was moved? Show work. (C = 1.0 106 C)
May 19, 2012 by Pat

physics
A 30.0 cm diameter loop is rotated in a uniform electric field until the position of maximum electric flux is found. The flux in this position is 5.60 multiplied by 105 Nm2/C. What is the magnitude of the electric field? MN/C
September 8, 2013 by gita

physics
A 30.0 cm diameter loop is rotated in a uniform electric field until the position of maximum electric flux is found. The flux in this position is 5.60 multiplied by 105 Nm2/C. What is the magnitude of the electric field? MN/C
September 13, 2013 by suhani

physics
A proton moves parallel to an electric field between points A and B. The change in the proton's electric potential energy is EPEB EPEA. If the proton is removed from point B and replaced with an electron, how does the change in electric potential energy of the electron ...
July 28, 2014 by Lily

Physics
What must the charge (sign and magnitude) of a particle of mass 1.48g be for it to remain stationary when placed in a downward-directed electric field of magnitude 670N/C ? What is the magnitude of an electric field in which the electric force on a proton is equal in magnitude...
September 3, 2013 by Wayne

physics
Which of these are correct for an electric field? A) It's a vector quantity, and can be cancelled.B) Three of three are correct.C) It stores electric energy.D) Two of three are correct.E) It's the altered space surrounding electric charge.
April 10, 2012 by Kristie

Physics
3. A 5.0 C point charge is moved within an electric field and has an electric potential energy change of 10.0 J. What is the electric potential difference before and after the charge was moved?)
May 1, 2012 by Vita

Science/Astronomy
Large geomagnetic storms can cause surges of electric current here on Earth. What is the MOST LIKELY result of a large surge in electric current? F. power outages G.better TV reception H. cheaper electric power I. Local Group galaxy What is the answer???
April 13, 2010 by Austin

physics
A particle has a charge of +2.2 μC and moves from point A to point B, a distance of 0.16 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 ...
January 30, 2013 by mageda

physics
please check: Two point charges, initially 1 cm apart, are moved to a distance of 3 cm apart. By what factor do the resulting electric and gravitational forces between them change? a. 9 b. 3 c. 1/3 d. 1/9 D Two positive charges, each of magnitude q, are on the y-axis at points...
March 14, 2009 by physics

physics
A moving particle encounters an external electric field that decreases its kinetic energy from 9100 eV to 6630 eV as the particle moves from position A to position B. The electric potential at A is -59.5 V, and the electric potential at B is +26.1 V. Determine the charge of ...
July 3, 2012 by Natasha

physics - electric fields
A 2.00 square meter flat surface is placed in a uniform electric field of magnitude 6.00 N/C. If the surface is oriented so that the field lines are all parallel to the surface, find the magnitude of the electric flux through this area
September 8, 2013 by Lakitha

Physics
The electric flux through the surface shown in Figure Ex27.10 is 15.0 Nm2/C, and the electric field makes an angle α = 70 with the surface. What is the electric field strength? The surface is a 10cm by 10cm square.
September 13, 2010 by David D.

physics
A moving particle encounters an external electric field that decreases its kinetic energy from 9100 eV to 6630 eV as the particle moves from position A to position B. The electric potential at A is -59.5 V, and the electric potential at B is +26.1 V. Determine the charge of ...
July 4, 2012 by Natasha

physics
A moving particle encounters an external electric field that decreases its kinetic energy from 10360 eV to 7680 eV as the particle moves from position A to position B. The electric potential at A is -52.5 V, and the electric potential at B is +29.7 V. Determine the charge of ...
February 14, 2013 by Anonymous

Physics
3 There are two charges +Q and Q/2 that locate at two positions with a separation of d as shown in Fig. 1. We may put +Q at the origin of the x-axis to facilitate the calculation. (a) Find the electric field for +Q and Q/2 at the position P. (5 points) (b) What is the total ...
September 5, 2010 by David

Physics
A 5.0 C point charge is moved within an electric field and has an electric potential energy change of 10.0 J. What is the electric potential difference before and after the charge was moved? Show work. (C = 1.0 106 Vq=energy so delta V must be 10 volts. What do I do NOW?
May 19, 2012 by Pat

Science(electric circuits)
What is the conclusion about current in a series electric circuit
June 12, 2014 by Lesedi

Science(electric circuits)
What is the conclusion about current in a parallel electric circuit
June 12, 2014 by Lesedi

University Physics II
How do you convert electric field into electric force?
March 24, 2010 by Me

physics
What is the primary difference between an electric motor and an electric generator?
May 16, 2012 by Alice

Physics
What is the basic difference between an electric generator and an electric motor?
May 28, 2012 by Jan

physics
What is the electric field intensity produced by a charge at 10 meters, where the electric potential is 1.44 volts?
June 17, 2013 by kayla

physics
In a thundercloud there may be an electric charge of 54 C near the top of the cloud and −54 C near the bottom of the cloud. If these charges are separated by about 4 km, what is the magnitude of the electric force between these two sets of charges? The value of the ...
February 19, 2013 by hannah

electric field intensity
Two 2.0 g spheres are suspended by 10.0 cm long light strings. A uniform electric field is applied in the x direction. If the spheres have charges of -5.0 10-8 C and +5.0 10-8 C, determine the electric field intensity that enables the spheres to be in equilibrium at = 10.
January 17, 2009 by tony

physics
How are electric potential and electric field strength related?
May 12, 2011 by ashley --- HELP PLEASEE!!!

physics(electric forces)
how do i figure out if an electric force between 2 stationary points are positive or negative?
March 17, 2013 by vii

Science(electric circuits)
What happaned in the series electric circuit with the one bulb disconnected?please Explain
June 12, 2014 by Lesedi

Science(electric circuits)
What is the conclusion about the potential difference(voltmeter readings) in a series electric circuit
June 12, 2014 by Lesedi

Science(electric circuits)
What is the conclusion about the potential difference(voltmeter readings) in a parallel electric circuit
June 12, 2014 by Lesedi

physics!
An electric dipole consists of 2.0 g spheres charged to 5.0 nC (positive and negative) at the ends of a 12 cm long massless rod. The dipole rotates on a frictionless pivot at its center. The dipole is held perpendicular to a uniform electric field with field strength 1400V, ...
February 8, 2012 by cha

Physics
In a typical living cell, the electric potential inside the cell is 0.070 V lower than the electric potential outside the cell. The thickness of the cell membrane is 0.10m. What is the magnitude and direction of the electric field (E) within the cell membrane?
March 30, 2013 by Nina

College Physics
An electric dipole consists of 2.0 g spheres charged to 5.0 nC (positive and negative) at the ends of a 12 cm long massless rod. The dipole rotates on a frictionless pivot at its center. The dipole is held perpendicular to a uniform electric field with field strength 1400V, ...
February 8, 2012 by Collin

college physics
An electric dipole consists of 2.0 g spheres charged to 5.0 nC (positive and negative) at the ends of a 12 cm long massless rod. The dipole rotates on a frictionless pivot at its center. The dipole is held perpendicular to a uniform electric field with field strength 1400V, ...
February 8, 2012 by cha

College Electric Physics
(a) What is the electric potential energy in joules of two electrons separated by 1.98 nm? (b) What would be it be if the separation was doubled?
February 11, 2011 by Bob

physics HELP MEEE SO CONFUSED
A spherical conductor has a radius of 14.0 cm and charge of 26.0 C. Calculate the electric field and the electric potential (a) r = 10.0 cm, (b) r = 20.0 cm, and (c) r = 14.0 cm from the center.
February 7, 2012 by confused

physics
A proton moves in a constant electric field from point A to point B. The magnitude of the electric field is 6.4 10^4 N/C; and it is directed as shown in the drawing, the direction opposite to the motion of the proton. If the distance from point A to point B is 0.50 m, what ...
February 16, 2012 by Daniel

physics
A proton moves in a constant electric field E from point A to point B. The magnitude of the electric field is 4.2 x10^4 N/C; and it is directed as shown in the drawing, the direction opposite to the motion of the proton. If the distance from point A to point B is 0.18 m, what ...
April 23, 2012 by Anonymous

science
The electric field in the atmosphere is about 140 N/C, downward. (b) Find the electric force on a proton with charge +1.6 10-19 C. formula please??
January 30, 2008 by natasha

Physics
If a proton is released from rest in a uniform electric field does electric potential at its position increase, stay the same, or decrese?
February 23, 2010 by Anonymous

Physics
If a proton is released from rest in a uniform electric field does electric potential at its position increase, stay the same, or decrese?
February 24, 2010 by Sara

physics
The electric potential in a certain region is V = a x2 + b x + c, where a = 14 V/m2, b = −19 V/m, and c = 61 V. Determine the position where the electric field is zero. Answer in units of m Please help!
July 9, 2013 by Kennedy

physics
a.What electric potential difference exists across a 5.2 F capacitor that has a charge of 2.1 10-3 C? how do i use uF and C into a formula to find answer?? b.An oil drop is negatively charged and weighs 8.5 10-15 N. The drop is suspended in an electric field intensity of 5.3 ...
February 5, 2008 by kailey

Physics
A beam of unknown charged particles passes at right angle to the direction of magnetic field of 9.0 10-2 T. If the speed of the particles is 3.0 104 m/s and force experienced by a particle is 8.64 10-16 N, how many electric charges are carried by one particle? {Force} = F = {...
May 26, 2009 by Landon

Physics Flux
The electric flux through the surface shown in Figure Ex27.10 is 15.0 Nm2/C, and the electric field makes an angle = 70 with the surface. What is the electric field strength? The surface is a 10cm by 10cm square.
September 13, 2010 by David

physics
An electric charfe of -3 C is moved from a position where the electric potential is 1 V to a position where the electric potential is -6V. What is the chsange in potential energy of the charge with this change in position? I know that change in PE = k(q1q)/r_2 - k(q1q)/r_1 I ...
March 5, 2008 by Andrea

Physics
1)Which of the following statements is true about electric forces? A)electric forces cause objects to only attract each other. B)electric forces cause objects to only repel each other C)electric forces cause objects to repel or attract each other D)electric forces have no ...
April 9, 2008 by Jon

PHYSICS URGENT HELP
a charges electric potential energy within an electric field is calculated as the product of the ____ of it's position times the magnitude of it's charge
December 18, 2013 by al

Physics
An object with a charge of -4.4 uC and a mass of 1.410^−2 kg experiences an upward electric force, due to a uniform electric field, equal in magnitude to its weight. Find the magnitude of the electric field. Find the direction of the electric field. If the the electric ...
January 23, 2012 by Cooper

physics
The electric field in a region is given by E=ayi + axj, where a= 2V/m^2 is a constant. What is the electric potential difference between the origin and the point x= 1m, y= 2m? Do I use the formula E= - deltaV= - (V/x)i+(V/y)j+(V/z)k)?
February 28, 2008 by Jessica

physics
f a typical family of four uses electric energy at an average rate of 458 W, how many kWh would their electric bill be for one month? Answer in kW
April 5, 2011 by Megan

physics
A force of 0.053 N is required to move a charge of 36 a distance of 30 cm in a uniform electric field. What is the size of the electric potential difference between the two points?
January 12, 2012 by tyler

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 ...
January 17, 2012 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 ...
January 17, 2012 by Taylor

Physics-Charges
A wall has a negative charge distribution producing a uniform horizontal electric field. A small plastic ball of mass 0.0261 kg, carrying charge of −102 μC, is suspended by an uncharged, nonconducting thread 0.369 m long. The thread is attached to the wall and the ...
March 7, 2012 by Joila

physics
Two point charges, q1 and q2, are placed 0.30 m apart on the x-axis, as shown in the figure above. Charge q1 has a value of 3.0 x 109 C. The net electric field at point P is zero Q: Calculate the magnitude of charge q2. Q: Calculate the magnitude of the electric force on q2 ...
February 23, 2012 by Kayberlynn

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 ...
May 15, 2011 by Sandhya

Chemisty
The relative electric charge of a proton is +1, the relative electric charge of an electron is -1 and that of neutron is 0. What is electric charge and why is it relative? Thank a lot.
January 20, 2009 by janice

physics
An electromagnetic wave has an electric field strength of 145 V/m at a point P in space at time t. (a) What is the electric field energy density at P? (b) A parallel-plate capacitor whose plates have area 0.110 m2 has a uniform electric field between its plates with the same ...
March 8, 2013 by Beth

Physics
An electric dipole is formed from two charges, q, spaced 1.00cm apart. The dipole is at the origin, oriented along the y-axis. The electric field strength at the point (x,y)=(0cm,10cm) is 320N/C . What is the charge q? Give your answer in nC. What is the electric field ...
February 21, 2014 by Allison

Physical Science
ok so i keep getting one wrong on a 4 question test and failing so can someone tell me what im getting wrong 1. What causes an electric current in a wire? A. Electric fields cause atoms to move in the wire. B. Electrons flow because of electrical attraction and repulsion. C. ...
March 1, 2013 by s

physics
a thin wire with linear charge density _ is surrounded by a conducting cylindrical shell. (a) If the electric field must be zero inside a conductor, is the electric field due to the wire shielded from extending beyond the conducting shell? (b) Find the electric field as a ...
September 23, 2008 by al

physics
When an electron moves from A to B along an electric field line in Fig. 24-29, the electric field does 3.66 x 10-19 J of work on it. What are the electric potential differences (a)VB - VA, (b)VC - VA, and (c)VC - VB? in the picture there r four field lines going from down to ...
April 15, 2009 by sweety

Physics
On a clear day, the Earths atmospheric electric field near the ground has a magnitude of 100 N/C and points vertically down. Inside the ground, the electric field is zero, since the ground is a conductor. Consider a mathematical box of 1.0 m x 1.0 m x 1.0 m, half below the ...
February 14, 2010 by Amy

Physics
An electromagnetic wave has an electric field strength of 145 V/m at a point P in space at time t. A parallel-plate capacitor whose plates have area 0.109 m2 has a uniform electric field between its plates with the same energy density as the answer to part a. What is the ...
July 1, 2010 by Drew

physics
while many properties are similar, one important difference between electric and gravitational forces is that unlike gravity, electric charge: a)can be transferred b) objeys an inverse-square law
March 28, 2011 by Nabil

Physics
A small object of mass 3.50 g and charge -22 C "floats" in a uniform electric field. What is the magnitude and direction of the electric field?
February 6, 2010 by Jan

Physics
A small object of mass 3.00 g and charge -13 C "floats" in a uniform electric field. What is the magnitude and direction of the electric field?
October 4, 2010 by Nate

physics
A hollow metal ball carrying an electric charge produces no electric field at a point: is it inside the ball?
May 11, 2011 by ashley --- HELP PLEASEE!!!

Physics
A small object of mass 2.60 g and charge -17 C "floats" in a uniform electric field. What is the magnitude and direction of the electric field?
February 17, 2013 by Phil

Physics
A rectangular surface (0.13 m 0.36 m) is oriented in a uniform electric field of 570 N/C. What is the maximum possible electric flux through the surface?
August 30, 2007 by Mary

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