An electron (m = 9.1 × 10−31 kg,q = −1.6 × 10−19 C)starts from rest at point A and has a speed of 5.0 × 106 m/s at point B.Only electric forces act on it during this motion.Determine the electric potential difference VA − VB.

A) −71 V B) +71 V C) −26 V D) +26 V E) −140 V A) −71 V B) +71 V C) −26 V D) +26 V E) −140 V A

A charge is placed on a spherical conductor of radius r1.This sphere is then connected to a distant sphere of radius r2 (not equal to r1)by a conducting wire.After the charges on the spheres are in equilibrium,

A) the electric fields at the surfaces of the two spheres are equal. B) the amount of charge on each sphere is q/2. C) both spheres are at the same potential. D) the potentials are in the ratio . E) the potentials are in the ratio . A) the electric fields at the surfaces of the two spheres are equal. B) the amount of charge on each sphere is q/2. C) both spheres are at the same potential. D) the potentials are in the ratio . E) the potentials are in the ratio .

Exam 25: Electric Potential

Two particles,each having a mass of 3.0 μg and having equal but opposite charges of magnitude 5.0 nC,are released simultaneously from rest when the two are 5.0 cm apart.What is the speed of either particle at the instant when the two are separated by 2.0 cm?

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Question 1

Correct Answer:

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Point charges of equal magnitudes (25 nC)and opposite signs are placed on (diagonally)opposite corners of a 60-cm × 80-cm rectangle.If point A is the corner of this rectangle nearest the positive charge and point B is located at the intersection of the diagonals of the rectangle,determine the potential difference,V_B − V_A.

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Question 2

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An electron (m = 9.1 × 10−³¹ kg,q = −1.6 × 10−¹⁹ C)starts from rest at point A and has a speed of 5.0 × 10⁶ m/s at point B.Only electric forces act on it during this motion.Determine the electric potential difference V_A − V_B.

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Question 3

Correct Answer:

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A system consisting of a negatively-charged particle and an electric field

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Question 4

Which statement is always correct when applied to a charge distribution located in a finite region of space?

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Question 5

The electric potential inside a charged solid spherical conductor in equilibrium

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Question 6

A charge of 18 nC is uniformly distributed along the y axis from y = 3 m to y = 5 m.Which of the following integrals is correct for the electric potential (relative to zero at infinity)at the point x = +2 m on the x axis?

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Question 7

A particle (q = +5.0 μC)is released from rest when it is 2.0 m from a charged particle which is held at rest.After the positively charged particle has moved 1.0 m toward the fixed particle,it has a kinetic energy of 50 mJ.What is the charge on the fixed particle?

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Question 8

When introduced into a region where an electric field is present,an electron with initial velocity Will eventually move

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Question 9

A particle (charge = 50 μC)moves in a region where the only force on it is an electric force.As the particle moves 25 cm from point A to point B,its kinetic energy increases by 1.5 mJ.Determine the electric potential difference,V_B − V_A.

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Question 10

Several charges in the neighborhood of point P produce an electric potential of 6.0 kV (relative to zero at infinity)and an electric field of N/C at point P.Determine the work required of an external agent to move a 3.0-μC charge along the x axis from infinity to point P without any net change in the kinetic energy of the particle.

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Question 11

Two identical particles,each with a mass of 2.0 μg and a charge of 25 nC,are released simultaneously from rest when the two are 4.0 cm apart.What is the speed of either particle at the instant when the two are separated by 10 cm?

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Question 12

Identical 4.0-μC charges are placed on the y axis at y = ±4.0 m.Point A is on the x axis at x = +3.0 m.Determine the electric potential of point A (relative to zero at the origin).

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Question 13

Charge of uniform linear density 6.0 nC/m is distributed along the x axis from x = 0 to x = +3 m.Which of the following integrals is correct for the electric potential (relative to zero at infinity)at the point y = +4 m on the y axis?

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Question 14

A particle (charge = +2.0 mC)moving in a region where only electric forces act on it has a kinetic energy of 5.0 J at point A.The particle subsequently passes through point B which has an electric potential of +1.5 kV relative to point A.Determine the kinetic energy of the particle as it moves through point B.

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Question 15

A rod (length = 2.0 m)is uniformly charged and has a total charge of 5.0 nC.What is the electric potential (relative to zero at infinity)at a point which lies along the axis of the rod and is 3.0 m from the center of the rod?

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Question 16

Charge of uniform linear density 3.0 nC/m is distributed along the x axis from x = 0 to x = 3 m.Which of the following integrals is correct for the electric potential (relative to zero at infinity)at the point x = +4 m on the x axis?

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Question 17

If a = 30 cm,b = 20 cm,q = +2.0 nC,and Q = −3.0 nC in the figure,what is the potential difference V_A − V_B?

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Question 18

The electric field in the region defined by the y-z plane and the negative x axis is given by E = −ax,where a is a constant.(There is no field for positive values of x. )As −x increases in magnitude,relative to V = 0 at the origin,the electric potential in the region defined above is

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Question 19

A charge is placed on a spherical conductor of radius r₁.This sphere is then connected to a distant sphere of radius r₂ (not equal to r₁)by a conducting wire.After the charges on the spheres are in equilibrium,

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Question 20

Showing 1 - 20 of 97

Exam 25: Electric Potential

Two particles,each having a mass of 3.0 μg and having equal but opposite charges of magnitude 5.0 nC,are released simultaneously from rest when the two are 5.0 cm apart.What is the speed of either particle at the instant when the two are separated by 2.0 cm?

An electron (m = 9.1 × 10−31 kg,q = −1.6 × 10−19 C)starts from rest at point A and has a speed of 5.0 × 106 m/s at point B.Only electric forces act on it during this motion.Determine the electric potential difference VA − VB.

A system consisting of a negatively-charged particle and an electric field

Which statement is always correct when applied to a charge distribution located in a finite region of space?

The electric potential inside a charged solid spherical conductor in equilibrium

A charge of 18 nC is uniformly distributed along the y axis from y = 3 m to y = 5 m.Which of the following integrals is correct for the electric potential (relative to zero at infinity)at the point x = +2 m on the x axis?

A particle (q = +5.0 μC)is released from rest when it is 2.0 m from a charged particle which is held at rest.After the positively charged particle has moved 1.0 m toward the fixed particle,it has a kinetic energy of 50 mJ.What is the charge on the fixed particle?

When introduced into a region where an electric field is present,an electron with initial velocity Will eventually move

A particle (charge = 50 μC)moves in a region where the only force on it is an electric force.As the particle moves 25 cm from point A to point B,its kinetic energy increases by 1.5 mJ.Determine the electric potential difference,VB − VA.

Two identical particles,each with a mass of 2.0 μg and a charge of 25 nC,are released simultaneously from rest when the two are 4.0 cm apart.What is the speed of either particle at the instant when the two are separated by 10 cm?

Identical 4.0-μC charges are placed on the y axis at y = ±4.0 m.Point A is on the x axis at x = +3.0 m.Determine the electric potential of point A (relative to zero at the origin).

Charge of uniform linear density 6.0 nC/m is distributed along the x axis from x = 0 to x = +3 m.Which of the following integrals is correct for the electric potential (relative to zero at infinity)at the point y = +4 m on the y axis?

A rod (length = 2.0 m)is uniformly charged and has a total charge of 5.0 nC.What is the electric potential (relative to zero at infinity)at a point which lies along the axis of the rod and is 3.0 m from the center of the rod?

Charge of uniform linear density 3.0 nC/m is distributed along the x axis from x = 0 to x = 3 m.Which of the following integrals is correct for the electric potential (relative to zero at infinity)at the point x = +4 m on the x axis?

If a = 30 cm,b = 20 cm,q = +2.0 nC,and Q = −3.0 nC in the figure,what is the potential difference VA − VB?

The electric field in the region defined by the y-z plane and the negative x axis is given by E = −ax,where a is a constant.(There is no field for positive values of x. )As −x increases in magnitude,relative to V = 0 at the origin,the electric potential in the region defined above is

A charge is placed on a spherical conductor of radius r1.This sphere is then connected to a distant sphere of radius r2 (not equal to r1)by a conducting wire.After the charges on the spheres are in equilibrium,

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An electron (m = 9.1 × 10−³¹ kg,q = −1.6 × 10−¹⁹ C)starts from rest at point A and has a speed of 5.0 × 10⁶ m/s at point B.Only electric forces act on it during this motion.Determine the electric potential difference V_A − V_B.

A particle (charge = 50 μC)moves in a region where the only force on it is an electric force.As the particle moves 25 cm from point A to point B,its kinetic energy increases by 1.5 mJ.Determine the electric potential difference,V_B − V_A.

If a = 30 cm,b = 20 cm,q = +2.0 nC,and Q = −3.0 nC in the figure,what is the potential difference V_A − V_B?

A charge is placed on a spherical conductor of radius r₁.This sphere is then connected to a distant sphere of radius r₂ (not equal to r₁)by a conducting wire.After the charges on the spheres are in equilibrium,