Three point charges, q1, q2, and q3, are located at the vertices of an equilateral triangle. If q1 = q2, what value must q3 have so that the total potential energy of the arrangement is zero?

A) q1 B) 0.5 q1 C) −0.5 q1 D) (q1 + q2)/2 E) no value will have this result A) q1 B) 0.5 q1 C) −0.5 q1 D) (q1 + q2)/2 E) no value will have this result

A parallel plate capacitor has a paper dielectric having dielectric strength 8.00 kV/mm and dielectric constant 3.00. The plate area is 3000 cm2 and the plate separation is 0.500 mm. If 10.0 V are applied to this capacitor, what is the charge on the capacitor?

A) 50.0 μC B) 42.0 nC C) 159 nC D) 16.0 nC E) 42.0 μC A) 50.0 μC B) 42.0 nC C) 159 nC D) 16.0 nC E) 42.0 μC

A parallel plate capacitor has a paper dielectric having dielectric strength 8.0 kV/mm and dielectric constant 3.0. The plate area is 3000 cm2 and the plate separation is 0.50 mm. What is the highest voltage that can be applied to this capacitor before breakdown occurs?

A) 15 V B) 1.2 × 102 V C) 4.0 × 102 V D) 4.0 × 103V E) 1.2 × 104 V A) 15 V B) 1.2 × 102 V C) 4.0 × 102 V D) 4.0 × 103V E) 1.2 × 104 V

A conducting sphere of radius 20 cm is charged to a potential of 1.0 × 106 volts. What is the charge on its surface?

A) 22 μC B) 4.4 μC C) 4.7 mC D) 9.0 nC E) 16 mC A) 22 μC B) 4.4 μC C) 4.7 mC D) 9.0 nC E) 16 mC

Exam 17: Electric Potential

The magnitude of the force on a proton sitting midway between a pair of parallel conducting plates that are at potentials of −17 V and 55 V, respectively, is 7.69 × 10⁻¹⁶ N. What is the separation distance between the plates?

(Multiple Choice)

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Question 21

The electric potential at a distance d from a point charge is V. At a distance d', the potential is 2V. What is the ratio of electric field at d' to that at d?

(Multiple Choice)

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Question 22

A hollow conducting sphere of radius 12 cm has a net charge of 18 μC. What is the potential at the center of the sphere?

(Multiple Choice)

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Question 23

A helium nucleus is accelerated from rest through a potential difference V to a kinetic energy of 3.2 × 10⁻¹³ J. What is V?

(Multiple Choice)

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Question 24

A parallel plate capacitor has a dielectric with constant 3.5. The plates are circular with radius 0.07 m, and the separation gap is 0.375 mm. What energy may be stored in this capacitor if 1250 V is the applied voltage?

(Multiple Choice)

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Question 25

Three point charges, q₁, q₂, and q₃, are located at the vertices of an equilateral triangle. If q₁ = q₂, what value must q₃ have so that the total potential energy of the arrangement is zero?

(Multiple Choice)

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Question 26

A parallel plate capacitor is charged to 12 V and the voltage source is then disconnected. When the air space between the plates is then filled with a dielectric of constant 6.0, what is the resulting voltage between the plates?

(Multiple Choice)

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Question 27

If the plate area, plate separation, and dielectric constant all are doubled for a parallel plate capacitor, what happens to the capacitance?

(Multiple Choice)

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Question 28

The SI unit for electric potential energy is equivalent to

(Multiple Choice)

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Question 29

A conducting sphere of radius 20 cm has a charge Q placed on it producing a field of magnitude E₀ at its surface. More charge is added to the surface until the magnitude of the field at the surface is 2 E₀. How much charge was added to the surface?

(Multiple Choice)

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Question 30

A parallel plate capacitor has a paper dielectric having dielectric strength 8.00 kV/mm and dielectric constant 3.00. The plate area is 3000 cm² and the plate separation is 0.500 mm. If 10.0 V are applied to this capacitor, what is the charge on the capacitor?

(Multiple Choice)

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Question 31

If two equipotent planes differ in potential by 1.0 volt, and the electric field between them is 20 N/C, what is the separation of the planes?

(Multiple Choice)

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Question 32

An air-filled 3.0 nF capacitor is charged to 8.0 V. If the plate separation is 100 μm, what is the energy density in the electric field between the plates?

(Multiple Choice)

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Question 33

The electric field between two charged plates is 7.2 kN/C. If the plates are separated by 3.0 mm, what is the potential difference between them?

(Multiple Choice)

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Question 34

A 3.6 μC charge is moved from a position where its electric potential energy is 7.2 mJ to a position where its potential energy is 1.8 mJ. What is the potential at the first position?

(Multiple Choice)

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Question 35

A 2.00 nC charge is placed on the x-axis at x = −3.00 cm, another 2.00 nC charge is placed on the x-axis at x = 3.00 cm, and a third 2.00 nC charge is placed on the y-axis at y = 3.00 cm. What is the potential at the origin?

(Multiple Choice)

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Question 36

A parallel plate capacitor has a paper dielectric having dielectric strength 8.0 kV/mm and dielectric constant 3.0. The plate area is 3000 cm² and the plate separation is 0.50 mm. What is the highest voltage that can be applied to this capacitor before breakdown occurs?

(Multiple Choice)

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Question 37

A conducting sphere of radius 20 cm is charged to a potential of 1.0 × 10⁶ volts. What is the charge on its surface?

(Multiple Choice)

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Question 38

An air-filled parallel plate capacitor is attached to a voltage source and charged. The voltage source is removed, and then the plates are separated to double their previous distance. What happens to the energy stored in the capacitor when the plates are separated?

(Multiple Choice)

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Question 39

Which of the following unit equations is correct?

(Multiple Choice)

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Question 40

Showing 21 - 40 of 81

Exam 17: Electric Potential

The magnitude of the force on a proton sitting midway between a pair of parallel conducting plates that are at potentials of −17 V and 55 V, respectively, is 7.69 × 10−16 N. What is the separation distance between the plates?

The electric potential at a distance d from a point charge is V. At a distance d', the potential is 2V. What is the ratio of electric field at d' to that at d?

A hollow conducting sphere of radius 12 cm has a net charge of 18 μC. What is the potential at the center of the sphere?

A helium nucleus is accelerated from rest through a potential difference V to a kinetic energy of 3.2 × 10−13 J. What is V?

A parallel plate capacitor has a dielectric with constant 3.5. The plates are circular with radius 0.07 m, and the separation gap is 0.375 mm. What energy may be stored in this capacitor if 1250 V is the applied voltage?

Three point charges, q1, q2, and q3, are located at the vertices of an equilateral triangle. If q1 = q2, what value must q3 have so that the total potential energy of the arrangement is zero?

A parallel plate capacitor is charged to 12 V and the voltage source is then disconnected. When the air space between the plates is then filled with a dielectric of constant 6.0, what is the resulting voltage between the plates?

If the plate area, plate separation, and dielectric constant all are doubled for a parallel plate capacitor, what happens to the capacitance?

The SI unit for electric potential energy is equivalent to

A conducting sphere of radius 20 cm has a charge Q placed on it producing a field of magnitude E0 at its surface. More charge is added to the surface until the magnitude of the field at the surface is 2 E0. How much charge was added to the surface?

A parallel plate capacitor has a paper dielectric having dielectric strength 8.00 kV/mm and dielectric constant 3.00. The plate area is 3000 cm2 and the plate separation is 0.500 mm. If 10.0 V are applied to this capacitor, what is the charge on the capacitor?

If two equipotent planes differ in potential by 1.0 volt, and the electric field between them is 20 N/C, what is the separation of the planes?

An air-filled 3.0 nF capacitor is charged to 8.0 V. If the plate separation is 100 μm, what is the energy density in the electric field between the plates?

The electric field between two charged plates is 7.2 kN/C. If the plates are separated by 3.0 mm, what is the potential difference between them?

A 3.6 μC charge is moved from a position where its electric potential energy is 7.2 mJ to a position where its potential energy is 1.8 mJ. What is the potential at the first position?

A 2.00 nC charge is placed on the x-axis at x = −3.00 cm, another 2.00 nC charge is placed on the x-axis at x = 3.00 cm, and a third 2.00 nC charge is placed on the y-axis at y = 3.00 cm. What is the potential at the origin?

A parallel plate capacitor has a paper dielectric having dielectric strength 8.0 kV/mm and dielectric constant 3.0. The plate area is 3000 cm2 and the plate separation is 0.50 mm. What is the highest voltage that can be applied to this capacitor before breakdown occurs?

A conducting sphere of radius 20 cm is charged to a potential of 1.0 × 106 volts. What is the charge on its surface?

An air-filled parallel plate capacitor is attached to a voltage source and charged. The voltage source is removed, and then the plates are separated to double their previous distance. What happens to the energy stored in the capacitor when the plates are separated?

Which of the following unit equations is correct?

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The magnitude of the force on a proton sitting midway between a pair of parallel conducting plates that are at potentials of −17 V and 55 V, respectively, is 7.69 × 10⁻¹⁶ N. What is the separation distance between the plates?

A helium nucleus is accelerated from rest through a potential difference V to a kinetic energy of 3.2 × 10⁻¹³ J. What is V?

Three point charges, q₁, q₂, and q₃, are located at the vertices of an equilateral triangle. If q₁ = q₂, what value must q₃ have so that the total potential energy of the arrangement is zero?

A conducting sphere of radius 20 cm has a charge Q placed on it producing a field of magnitude E₀ at its surface. More charge is added to the surface until the magnitude of the field at the surface is 2 E₀. How much charge was added to the surface?

A parallel plate capacitor has a paper dielectric having dielectric strength 8.00 kV/mm and dielectric constant 3.00. The plate area is 3000 cm² and the plate separation is 0.500 mm. If 10.0 V are applied to this capacitor, what is the charge on the capacitor?

A parallel plate capacitor has a paper dielectric having dielectric strength 8.0 kV/mm and dielectric constant 3.0. The plate area is 3000 cm² and the plate separation is 0.50 mm. What is the highest voltage that can be applied to this capacitor before breakdown occurs?

A conducting sphere of radius 20 cm is charged to a potential of 1.0 × 10⁶ volts. What is the charge on its surface?