Question 1

A charge per unit length given by  λ\lambdaλ (x)  = bx, where b = 12 nC/m2, is distributed along the x axis from x = +9.0 cm to x = +16 cm.If the electric potential at infinity is taken to be zero, what is the electric potential at the point P on the y axis at y = 12 cm?

Accepted Answer

A)  5.4 V
B)  7.2 V
C)  9.0 V
D)  9.9 V
E)  16 V F) A) and C)
G) A) and D)

Question 2

A particle (charge = 40  μ\muμ C)  moves directly toward a second particle (charge = 80  μ\muμ C)  which is held in a fixed position.At an instant when the distance between the two particles is 2.0 m, the kinetic energy of the moving particle is 16 J.Determine the distance separating the two particles when the moving particle is momentarily stopped.

Accepted Answer

A)  0.75 m
B)  0.84 m
C)  0.95 m
D)  0.68 m
E)  0.56 m F) C) and D)
G) A) and D)

Question 3

Two large parallel conducting plates are 8.0 cm apart and carry equal but opposite charges on their facing surfaces.The magnitude of the surface charge density on either of the facing surfaces is 2.0 nC/m2.Determine the magnitude of the electric potential difference between the plates.

Accepted Answer

A)  36 V
B)  27 V
C)  18 V
D)  45 V
E)  16 VF) B) and D)
G) B) and C)

Question 4

Through what potential difference must an electron (starting from rest)  be accelerated if it is to reach a speed of 3.0 *107 m/s?

Accepted Answer

A)  5.8 kV
B)  2.6 kV
C)  7.1 kV
D)  8.6 kV
E)  5.1 kVF) A) and E)
G) C) and D)

Question 5

A particle (mass = 6.7 *10-27 kg, charge = 3.2 * 10-19 C)  moves along the positive x axis with a speed of 4.8 *105 m/s.It enters a region of uniform electric field parallel to its motion and comes to rest after moving 2.0 m into the field.What is the magnitude of the electric field?

Accepted Answer

A)  2.0 kN/C
B)  1.5 kN/C
C)  1.2 kN/C
D)  3.5 kN/C
E)  2.4 kN/CF) D) and E)
G) A) and B)

Question 6

A solid conducting sphere (radius = 5.0 cm)  has a charge of 0.25 nC distributed uniformly on its surface.If point A is located at the centre of the sphere and point B is 15 cm from the centre, what is the magnitude of the electric potential difference between these two points?

Accepted Answer

A)  23 V
B)  30 V
C)  15 V
D)  45 V
E)  60 VF) None of the above
G) C) and D)

Question 7

Two charges lie on the x axis, +3q at the origin, and -2q at x = 5.0 m.The point on the x axis where the electric potential has a zero value (when the value at infinity is also zero)  is:

Accepted Answer

A)  1.0 m.
B)  2.0 m.
C)  2.5 m.
D)  3.0 m.
E)  4.0 m.F) A) and E)
G) B) and D)

Question 8

When a negative charge is released and moves along an electric field line, it moves to a position of:

Accepted Answer

A)  lower potential and lower potential energy.
B)  lower potential and higher potential energy.
C)  higher potential and lower potential energy.
D)  higher potential and higher potential energy.
E)  decreasing magnitude of the electric field.F) A) and E)
G) C) and D)

Question 9

An alpha particle (m = 6.7 * 10-27 kg, q = +3.2 *10-19 C)  has a speed of 20 km/s at point A and moves to point B where it momentarily stops.Only electric forces act on the particle during this motion.Determine the electric potential difference VA -VB.

Accepted Answer

A)  +4.2 V
B)  (-4.2 V) 
C)  (-9.4 V) 
D)  +9.4 V
E)  (-8.4 V) F) A) and D)
G) B) and E) B

Question 10

A charge of +3.0  μ\muμ C is distributed uniformly along the circumference of a circle with a radius of 20 cm.How much external energy is required to bring a charge of 25 μ\muμ C from infinity to the centre of the circle?

Accepted Answer

A)  5.4 J
B)  3.4 J
C)  4.3 J
D)  2.7 J
E)  6.8 J F) A) and B)
G) A) and C)

Question 11

Charge of uniform density 90 nC/m3 is distributed throughout the inside of a long non-conducting cylindrical rod (radius = 2.0 cm) .Determine the magnitude of the potential difference of point A (2.0 cm from the axis of the rod)  and point B (4.0 cm from the axis) .

Accepted Answer

A)  1.9 V
B)  1.4 V
C)  2.2 V
D)  2.8 V
E)  4.0 VF) B) and D)
G) A) and B)

Question 12

Several charges in the neighbourhood 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- μ\muμ C charge along the x axis from infinity to point P without any net change in the kinetic energy of the particle.

Accepted Answer

A)  21 mJ
B)  18 mJ
C)  24 mJ
D)  27 mJ
E)  12 mJ F) C) and D)
G) B) and C)

Question 13

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?

Accepted Answer

A)  +60 V
B)  +72 V
C)  +84 V
D)  +96 V
E)  +48 VF) B) and D)
G) B) and C)

Question 14

How much electrical charge is needed to raise an isolated metal sphere of radius 1.0 m to a potential of 1.0 * 106 V?

Accepted Answer

The answer of How much electrical charge is needed to...

Question 15

When a charged particle is moved along an electric field line:

Accepted Answer

A)  the electric field does no work on the charge.
B)  the electrical potential energy of the charge does not change.
C)  the electrical potential energy of the charge undergoes the maximum change in magnitude.
D)  the voltage changes, but there is no change in electrical potential energy.
E)  the electrical potential energy undergoes the maximum change, but there is no change in voltage.F) A) and C)
G) B) and C) C

Question 16

Two identical particles, each with a mass of 4.5  μ\muμ g and a charge of 30 nC, are moving directly toward each other with equal speeds of 4.0 m/s at an instant when the distance separating the two is equal to 25 cm.How far apart will they be when closest to one another?

Accepted Answer

A)  9.8 cm
B)  12 cm
C)  7.8 cm
D)  15 cm
E)  20 cm F) C) and E)
G) A) and B) C

Question 17

What is the speed of a proton that has been accelerated from rest through a potential difference of 4.0 kV?

Accepted Answer

A)  1.1 * 106 m/s
B)  9.8 * 105 m/s
C)  8.8 * 105 m/s
D)  1.2 * 106 m/s
E)  6.2 * 105 m/sF) D) and E)
G) B) and D)

Question 18

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?

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) B) and C)
G) A) and B)

Question 19

The electric potential inside a charged solid spherical conductor in equilibrium:

Accepted Answer

A)  is always zero.
B)  is constant and equal to its value at the surface.
C)  decreases from its value at the surface to a value of zero at the centre.
D)  increases from its value at the surface to a value at the centre that is a multiple of the potential at the surface.
E)  is equal to the charge passing through the surface per unit time divided by the resistance.F) A) and B)
G) B) and E)

Question 20

When a positive charge is released and moves along an electric field line, it moves to a position of:

Accepted Answer

A)  lower potential and lower potential energy.
B)  lower potential and higher potential energy.
C)  higher potential and lower potential energy.
D)  higher potential and higher potential energy.
E)  greater magnitude of the electric field.F) A) and E)
G) B) and D)

Exam 3: Electric Potential

A charge per unit length given by $\lambda$ (x) = bx, where b = 12 nC/m2, is distributed along the x axis from x = +9.0 cm to x = +16 cm.If the electric potential at infinity is taken to be zero, what is the electric potential at the point P on the y axis at y = 12 cm?

Correct Answer
verified

Correct Answer
verified

Two large parallel conducting plates are 8.0 cm apart and carry equal but opposite charges on their facing surfaces.The magnitude of the surface charge density on either of the facing surfaces is 2.0 nC/m2.Determine the magnitude of the electric potential difference between the plates.

Correct Answer
verified

Through what potential difference must an electron (starting from rest) be accelerated if it is to reach a speed of 3.0 *107 m/s?

Correct Answer
verified

A particle (mass = 6.7 10-27 kg, charge = 3.2 10-19 C) moves along the positive x axis with a speed of 4.8 *105 m/s.It enters a region of uniform electric field parallel to its motion and comes to rest after moving 2.0 m into the field.What is the magnitude of the electric field?

Correct Answer
verified

A solid conducting sphere (radius = 5.0 cm) has a charge of 0.25 nC distributed uniformly on its surface.If point A is located at the centre of the sphere and point B is 15 cm from the centre, what is the magnitude of the electric potential difference between these two points?

Correct Answer
verified

Two charges lie on the x axis, +3q at the origin, and -2q at x = 5.0 m.The point on the x axis where the electric potential has a zero value (when the value at infinity is also zero) is:

Correct Answer
verified

When a negative charge is released and moves along an electric field line, it moves to a position of:

Correct Answer
verified

An alpha particle (m = 6.7 * 10-27 kg, q = +3.2 *10-19 C) has a speed of 20 km/s at point A and moves to point B where it momentarily stops.Only electric forces act on the particle during this motion.Determine the electric potential difference VA -VB.

Correct Answer
verified
B

A charge of +3.0 $\mu$ C is distributed uniformly along the circumference of a circle with a radius of 20 cm.How much external energy is required to bring a charge of 25 $\mu$ C from infinity to the centre of the circle?

Correct Answer
verified

Charge of uniform density 90 nC/m3 is distributed throughout the inside of a long non-conducting cylindrical rod (radius = 2.0 cm) .Determine the magnitude of the potential difference of point A (2.0 cm from the axis of the rod) and point B (4.0 cm from the axis) .

Correct Answer
verified

Correct Answer
verified

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?

Correct Answer
verified

How much electrical charge is needed to raise an isolated metal sphere of radius 1.0 m to a potential of 1.0 * 106 V?

Correct Answer
verified

When a charged particle is moved along an electric field line:

Correct Answer
verified
C

Two identical particles, each with a mass of 4.5 $\mu$ g and a charge of 30 nC, are moving directly toward each other with equal speeds of 4.0 m/s at an instant when the distance separating the two is equal to 25 cm.How far apart will they be when closest to one another?

Correct Answer
verified
C

What is the speed of a proton that has been accelerated from rest through a potential difference of 4.0 kV?

Correct Answer
verified

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?

Correct Answer
verified

The electric potential inside a charged solid spherical conductor in equilibrium:

Correct Answer
verified

When a positive charge is released and moves along an electric field line, it moves to a position of:

Correct Answer
verified

Exam 3: Electric Potential

A charge per unit length given by λ\lambdaλ (x) = bx, where b = 12 nC/m2, is distributed along the x axis from x = +9.0 cm to x = +16 cm.If the electric potential at infinity is taken to be zero, what is the electric potential at the point P on the y axis at y = 12 cm?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Two large parallel conducting plates are 8.0 cm apart and carry equal but opposite charges on their facing surfaces.The magnitude of the surface charge density on either of the facing surfaces is 2.0 nC/m2.Determine the magnitude of the electric potential difference between the plates.

Correct AnswerverifiedShow Answer

Through what potential difference must an electron (starting from rest) be accelerated if it is to reach a speed of 3.0 *107 m/s?

Correct AnswerverifiedShow Answer

A particle (mass = 6.7 *10-27 kg, charge = 3.2 * 10-19 C) moves along the positive x axis with a speed of 4.8 *105 m/s.It enters a region of uniform electric field parallel to its motion and comes to rest after moving 2.0 m into the field.What is the magnitude of the electric field?

Correct AnswerverifiedShow Answer

A solid conducting sphere (radius = 5.0 cm) has a charge of 0.25 nC distributed uniformly on its surface.If point A is located at the centre of the sphere and point B is 15 cm from the centre, what is the magnitude of the electric potential difference between these two points?

Correct AnswerverifiedShow Answer

Two charges lie on the x axis, +3q at the origin, and -2q at x = 5.0 m.The point on the x axis where the electric potential has a zero value (when the value at infinity is also zero) is:

Correct AnswerverifiedShow Answer

When a negative charge is released and moves along an electric field line, it moves to a position of:

Correct AnswerverifiedShow Answer

An alpha particle (m = 6.7 * 10-27 kg, q = +3.2 *10-19 C) has a speed of 20 km/s at point A and moves to point B where it momentarily stops.Only electric forces act on the particle during this motion.Determine the electric potential difference VA -VB.

Correct AnswerverifiedB

A charge of +3.0 μ\muμ C is distributed uniformly along the circumference of a circle with a radius of 20 cm.How much external energy is required to bring a charge of 25 μ\muμ C from infinity to the centre of the circle?

Correct AnswerverifiedShow Answer

Charge of uniform density 90 nC/m3 is distributed throughout the inside of a long non-conducting cylindrical rod (radius = 2.0 cm) .Determine the magnitude of the potential difference of point A (2.0 cm from the axis of the rod) and point B (4.0 cm from the axis) .

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

How much electrical charge is needed to raise an isolated metal sphere of radius 1.0 m to a potential of 1.0 * 106 V?

Correct AnswerverifiedShow Answer

When a charged particle is moved along an electric field line:

Correct AnswerverifiedC

Two identical particles, each with a mass of 4.5 μ\muμ g and a charge of 30 nC, are moving directly toward each other with equal speeds of 4.0 m/s at an instant when the distance separating the two is equal to 25 cm.How far apart will they be when closest to one another?

Correct AnswerverifiedC

What is the speed of a proton that has been accelerated from rest through a potential difference of 4.0 kV?

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

The electric potential inside a charged solid spherical conductor in equilibrium:

Correct AnswerverifiedShow Answer

When a positive charge is released and moves along an electric field line, it moves to a position of:

Correct AnswerverifiedShow Answer

A charge per unit length given by $\lambda$ (x) = bx, where b = 12 nC/m2, is distributed along the x axis from x = +9.0 cm to x = +16 cm.If the electric potential at infinity is taken to be zero, what is the electric potential at the point P on the y axis at y = 12 cm?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

A particle (mass = 6.7 10-27 kg, charge = 3.2 10-19 C) moves along the positive x axis with a speed of 4.8 *105 m/s.It enters a region of uniform electric field parallel to its motion and comes to rest after moving 2.0 m into the field.What is the magnitude of the electric field?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
B

A charge of +3.0 $\mu$ C is distributed uniformly along the circumference of a circle with a radius of 20 cm.How much external energy is required to bring a charge of 25 $\mu$ C from infinity to the centre of the circle?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
C

Two identical particles, each with a mass of 4.5 $\mu$ g and a charge of 30 nC, are moving directly toward each other with equal speeds of 4.0 m/s at an instant when the distance separating the two is equal to 25 cm.How far apart will they be when closest to one another?

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified