The electric potential at a point is space is given by the relation V = 23x - 27y + 11y2 + 72.What is the x-component of the electric field (in V/m)at the point r = (3.0,2.0,1.0)?

A) -23 B) -95 C) 95 D) -17 E) -29 A) -23 B) -95 C) 95 D) -17 E) -29

Two charges Q1 = 4.4 $\mu$C and Q2 = -3.9 $\mu$C are located on the x-axis at x1 = -80 m and x2 = 87 m.What is the electric potential at x = 52 m?

A) 0.125 V B) -0.125 V C) 0 V D) 703 V E) -703 V A) 0.125 V B) -0.125 V C) 0 V D) 703 V E) -703 V

An electric potential has the value (22V/m)(y)- (13V/m2 )(z-3m)2.What is the electric field at the origin?

A) -22V/m ŷ B) -78V/m ẑ C) + 56V/m D) -22V/m ŷ - 78V/m ẑ E) + 22 V/m ŷ + 78V/m ẑ A) -22V/m ŷ B) -78V/m ẑ C) + 56V/m D) -22V/m ŷ - 78V/m ẑ E) + 22 V/m ŷ + 78V/m ẑ

Exam 23: Electric Potential

Two charged particles,Q₁ = + 12.0 mC,Q₂ = -5.0mC are placed on a line.At what finite locations along the line may the electric potential be equal to zero? I.in between the particles,closer to the positive particle II.in between the particles,closer to the negative particle III.not in between,but closer to the positive particle IV.not in between,but closer to the negative particle V.It can never be zero.

(Multiple Choice)

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Question 41

How much charge must be placed on a 10 cm diameter metal sphere so that the electric potential at the center of the sphere is 1.0 V? Assume that the electric potential is zero at points infinitely far away from the sphere.

(Multiple Choice)

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Question 42

An electron (mass: 9.11 * 10^-31 kg)and a proton (mass: 1.67 * 10^-27 kg)are each accelerated from rest through a potential difference of 15 V that spans 15 cm.Which one takes less time to cover the 15 cm distance?

(Multiple Choice)

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Question 43

In large televisions,electrons are accelerated from rest by a potential difference of 20 kV and shot onto a phosphorescent screen to produce an image.What is the speed of the electrons when they reach the screen?

(Multiple Choice)

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Question 44

An electron is accelerated from rest through a potential difference of 450 V.What is its final speed?

(Multiple Choice)

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Question 45

The potential energy of a system of three 2 $\mu$ C charges arranged in an equilateral triangle is 0.54 J What is the length of one side of this triangle?

(Multiple Choice)

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Question 46

A metal sphere of radius R = 30 cm carries a total charge Q = 2.0 $\mu$ C.A charge is located 5 m from the center of the sphere.How much work does it take to move the charge to a point exactly on the opposite side of the sphere,5 m away from the center,on the negative x-axis?

(Multiple Choice)

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Question 47

A point charge is moved against a potential difference of + 20 V.The work done by the force moving the charge is 25 µJ.What is the charge?

(Multiple Choice)

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Question 48

In Rutherford's famous experiment,alpha particles of mass 6.64 * 10^-27 kg and charge + 2e were fired directly at a gold nucleus (charge + 79e)with a speed of 3 * 10⁷ m/s.Due to the Coulomb repulsive force the alpha particles slowed down and eventually came to rest momentarily before turning around.The distance alpha particles came closest to the gold nucleus before turning around was

(Multiple Choice)

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Question 49

A 20-g ball with 2 $\mu$ C of charge is placed 1 m away from a fixed 1-C charge and released.How fast is the charge moving a very long time later?

(Multiple Choice)

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Question 50

The electric potential at a point is space is given by the relation V = 23x - 27y + 11y² + 72.What is the x-component of the electric field (in V/m)at the point r = (3.0,2.0,1.0)?

(Multiple Choice)

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Question 51

Two charges Q₁ = 4.4 $\mu$ C and Q₂ = -3.9 $\mu$ C are located on the x-axis at x₁ = -80 m and x₂ = 87 m.What is the electric potential at x = 52 m?

(Multiple Choice)

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Question 52

How much work would be required to move an electron from 0.0529 * 10^-9 m from a proton to four times that distance?

(Multiple Choice)

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Question 53

An electric potential has the value (22V/m)(y)- (13V/m² )(z-3m)².What is the electric field at the origin?

(Multiple Choice)

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Question 54

What is the potential energy of a system of three 2 $\mu$ C charges arranged in an equilateral triangle of side 20 cm?

(Multiple Choice)

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Question 55

A cartoon dog obtains a voltage of 17,000 V in his fur by scuffing his feet on the carpet.If he can be treated as a sphere of radius 12 cm,how much charge is on his fur?

(Multiple Choice)

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Question 56

A point charge of 5.0 is located at (2.5 m,4.1 m).A second point charge of is located at (-2.0 m,1.0 m).What is the electric potential at the origin?

(Multiple Choice)

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Question 57

An infinite plane of charge has a planar charge density of + 2.2 nC/m² and is located in the yz plane at x=0.A + 3.3 nC fixed point charge is located at x = + 1.0 m.At what position on the x-axis between x = 0.0 m and x = + 1.0 m is the electric potential a minimum?

(Multiple Choice)

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Question 58

Two point charges are located at two corners of a triangle as shown.What is the electric potential at the right corner of the triangle?

(Multiple Choice)

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Question 59

A 5.0 V battery is connected to two parallel metal plates placed in a vacuum.An electron is accelerated from rest from the negative plate toward the positive plate.What kinetic energy does the electron have as it just reaches the positive plate?

(Multiple Choice)

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Question 60

Showing 41 - 60 of 75

Exam 23: Electric Potential

How much charge must be placed on a 10 cm diameter metal sphere so that the electric potential at the center of the sphere is 1.0 V? Assume that the electric potential is zero at points infinitely far away from the sphere.

An electron (mass: 9.11 * 10-31 kg)and a proton (mass: 1.67 * 10-27 kg)are each accelerated from rest through a potential difference of 15 V that spans 15 cm.Which one takes less time to cover the 15 cm distance?

In large televisions,electrons are accelerated from rest by a potential difference of 20 kV and shot onto a phosphorescent screen to produce an image.What is the speed of the electrons when they reach the screen?

An electron is accelerated from rest through a potential difference of 450 V.What is its final speed?

The potential energy of a system of three 2 μ\muμ C charges arranged in an equilateral triangle is 0.54 J What is the length of one side of this triangle?

A metal sphere of radius R = 30 cm carries a total charge Q = 2.0 μ\muμ C.A charge is located 5 m from the center of the sphere.How much work does it take to move the charge to a point exactly on the opposite side of the sphere,5 m away from the center,on the negative x-axis?

A point charge is moved against a potential difference of + 20 V.The work done by the force moving the charge is 25 µJ.What is the charge?

A 20-g ball with 2 μ\muμ C of charge is placed 1 m away from a fixed 1-C charge and released.How fast is the charge moving a very long time later?

The electric potential at a point is space is given by the relation V = 23x - 27y + 11y2 + 72.What is the x-component of the electric field (in V/m)at the point r = (3.0,2.0,1.0)?

Two charges Q1 = 4.4 μ\muμ C and Q2 = -3.9 μ\muμ C are located on the x-axis at x1 = -80 m and x2 = 87 m.What is the electric potential at x = 52 m?

How much work would be required to move an electron from 0.0529 * 10-9 m from a proton to four times that distance?

An electric potential has the value (22V/m)(y)- (13V/m2 )(z-3m)2.What is the electric field at the origin?

What is the potential energy of a system of three 2 μ\muμ C charges arranged in an equilateral triangle of side 20 cm?

A cartoon dog obtains a voltage of 17,000 V in his fur by scuffing his feet on the carpet.If he can be treated as a sphere of radius 12 cm,how much charge is on his fur?

A point charge of 5.0 is located at (2.5 m,4.1 m).A second point charge of is located at (-2.0 m,1.0 m).What is the electric potential at the origin?

An infinite plane of charge has a planar charge density of + 2.2 nC/m2 and is located in the yz plane at x=0.A + 3.3 nC fixed point charge is located at x = + 1.0 m.At what position on the x-axis between x = 0.0 m and x = + 1.0 m is the electric potential a minimum?

Two point charges are located at two corners of a triangle as shown.What is the electric potential at the right corner of the triangle?

A 5.0 V battery is connected to two parallel metal plates placed in a vacuum.An electron is accelerated from rest from the negative plate toward the positive plate.What kinetic energy does the electron have as it just reaches the positive plate?

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An electron (mass: 9.11 * 10^-31 kg)and a proton (mass: 1.67 * 10^-27 kg)are each accelerated from rest through a potential difference of 15 V that spans 15 cm.Which one takes less time to cover the 15 cm distance?

The potential energy of a system of three 2 $\mu$ C charges arranged in an equilateral triangle is 0.54 J What is the length of one side of this triangle?

A metal sphere of radius R = 30 cm carries a total charge Q = 2.0 $\mu$ C.A charge is located 5 m from the center of the sphere.How much work does it take to move the charge to a point exactly on the opposite side of the sphere,5 m away from the center,on the negative x-axis?

A 20-g ball with 2 $\mu$ C of charge is placed 1 m away from a fixed 1-C charge and released.How fast is the charge moving a very long time later?

The electric potential at a point is space is given by the relation V = 23x - 27y + 11y² + 72.What is the x-component of the electric field (in V/m)at the point r = (3.0,2.0,1.0)?

Two charges Q₁ = 4.4 $\mu$ C and Q₂ = -3.9 $\mu$ C are located on the x-axis at x₁ = -80 m and x₂ = 87 m.What is the electric potential at x = 52 m?

How much work would be required to move an electron from 0.0529 * 10^-9 m from a proton to four times that distance?

An electric potential has the value (22V/m)(y)- (13V/m² )(z-3m)².What is the electric field at the origin?

What is the potential energy of a system of three 2 $\mu$ C charges arranged in an equilateral triangle of side 20 cm?

An infinite plane of charge has a planar charge density of + 2.2 nC/m² and is located in the yz plane at x=0.A + 3.3 nC fixed point charge is located at x = + 1.0 m.At what position on the x-axis between x = 0.0 m and x = + 1.0 m is the electric potential a minimum?