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

A) 22 $\mu$C B) 4.4 $\mu$C C) 4.7 mC D) 9.0 nC E) 16 mC A) 22 $\mu$C B) 4.4 $\mu$C C) 4.7 mC D) 9.0 nC E) 16 mC

Three point charges,q1,q2,and q3,are arranged so the potential energy for the pair q1 and q2 is 0.12 J and for the pair q2 and q3 is 0.23 J.What is the potential energy for the pair q1 and q3?

A) 0.11 J B) -0.11J C) 0.35 J D) -0.35 J E) insufficient information is given for a unique answer A) 0.11 J B) -0.11J C) 0.35 J D) -0.35 J E) insufficient information is given for a unique answer

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

Exam 17: Electric Potential

A parallel plate capacitor has air in between the plates,which are circular with radius 0.07 m.The separation gap is 0.375 mm.What is the maximum energy that can be stored in this capacitor if air-breakdown is to be avoided? The breakdown threshold field is approximately 3 $\times$ 10⁶ N/C.

(Multiple Choice)

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Question 61

The electric potential unit volt is equal to a

(Multiple Choice)

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Question 62

One member of a pair of parallel conducting plates has potential 17 V. An electron is ejected from that plate at potential and travels the other plate,attaining a velocity of 5.0 $\times$ 10⁶ m/s when it arrives.What is the potential of the second plate? The mass of the electron is 9.11 $\times$ 10^-31 kg.

(Multiple Choice)

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Question 63

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 64

The force on a proton sitting midway between a pair of parallel conducting plates that sit at potentials of -17 V and 55 V,respectively is 7.68 $\times$ 10^-16 N.What is the separation distance between the plates?

(Multiple Choice)

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Question 65

A 3.6 $\mu$ C charge is moved from a position where its electric potential energy is 7.2 my to a position where its potential energy is 1.8 my.What is the change in potential from the initial position to the final position?

(Multiple Choice)

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Question 66

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

(Multiple Choice)

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Question 67

Three point charges,q₁,q₂,and q₃,are arranged so the potential energy for the pair q₁ and q₂ is 0.12 J and for the pair q₂ and q₃ is 0.23 J.What is the potential energy for the pair q₁ and q₃?

(Multiple Choice)

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Question 68

If the charge on a parallel plate capacitor doubles,which of the following also doubles?

(Multiple Choice)

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Question 69

Tripling the separation between charges changes the potential energy of a pair of point charges by a factor of

(Multiple Choice)

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Question 70

A parallel plate capacitor has an air dielectric.The capacitor is charged with surface charge density $\sigma_{0}$ and then the voltage source is removed.When an insulator with dielectric constant 5.0 is inserted between the plates,what happens to the electric field strength if the surface charge density does not change?

(Multiple Choice)

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Question 71

If a 0.20 pF capacitor has a voltage of 40 mV,how many more electrons are on the negative plate than on the positive plate?

(Multiple Choice)

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Question 72

A helium nucleus is accelerated from rest through a potential difference V to a kinetic energy of 3.2 $\times$ 10^-13 J.What is V?

(Multiple Choice)

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Question 73

The unit F,the farad,is equal to which of the following?

(Multiple Choice)

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Question 74

If helium nuclei and protons are each accelerated from rest through the same potential difference,how do the resulting speeds compare?

(Multiple Choice)

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Question 75

The reason the capacitance of a parallel plate capacitor having a dielectric between the plates changes is due to

(Multiple Choice)

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Question 76

The potential energy of a 3.5 pC charge separated by 6.2 cm from a 1.6 $\mu$ C charge is

(Multiple Choice)

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Question 77

Which of the following statements is true?

(Multiple Choice)

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Question 78

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 79

A 3.6 $\mu$ C charge is moved from a position where its electric potential energy is 7.2 my to a position where its potential energy is 1.8 my.What is the potential at the first position?

(Multiple Choice)

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Question 80

Showing 61 - 80 of 80

Exam 17: Electric Potential

A parallel plate capacitor has air in between the plates,which are circular with radius 0.07 m.The separation gap is 0.375 mm.What is the maximum energy that can be stored in this capacitor if air-breakdown is to be avoided? The breakdown threshold field is approximately 3 ×\times× 106 N/C.

The electric potential unit volt is equal to a

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?

The force on a proton sitting midway between a pair of parallel conducting plates that sit at potentials of -17 V and 55 V,respectively is 7.68 ×\times× 10-16 N.What is the separation distance between the plates?

A 3.6 μ\muμ C charge is moved from a position where its electric potential energy is 7.2 my to a position where its potential energy is 1.8 my.What is the change in potential from the initial position to the final position?

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

Three point charges,q1,q2,and q3,are arranged so the potential energy for the pair q1 and q2 is 0.12 J and for the pair q2 and q3 is 0.23 J.What is the potential energy for the pair q1 and q3?

If the charge on a parallel plate capacitor doubles,which of the following also doubles?

Tripling the separation between charges changes the potential energy of a pair of point charges by a factor of

If a 0.20 pF capacitor has a voltage of 40 mV,how many more electrons are on the negative plate than on the positive plate?

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

The unit F,the farad,is equal to which of the following?

If helium nuclei and protons are each accelerated from rest through the same potential difference,how do the resulting speeds compare?

The reason the capacitance of a parallel plate capacitor having a dielectric between the plates changes is due to

The potential energy of a 3.5 pC charge separated by 6.2 cm from a 1.6 μ\muμ C charge is

Which of the following statements is true?

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 3.6 μ\muμ C charge is moved from a position where its electric potential energy is 7.2 my to a position where its potential energy is 1.8 my.What is the potential at the first position?

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A parallel plate capacitor has air in between the plates,which are circular with radius 0.07 m.The separation gap is 0.375 mm.What is the maximum energy that can be stored in this capacitor if air-breakdown is to be avoided? The breakdown threshold field is approximately 3 $\times$ 10⁶ N/C.

The force on a proton sitting midway between a pair of parallel conducting plates that sit at potentials of -17 V and 55 V,respectively is 7.68 $\times$ 10^-16 N.What is the separation distance between the plates?

A 3.6 $\mu$ C charge is moved from a position where its electric potential energy is 7.2 my to a position where its potential energy is 1.8 my.What is the change in potential from the initial position to the final position?

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

Three point charges,q₁,q₂,and q₃,are arranged so the potential energy for the pair q₁ and q₂ is 0.12 J and for the pair q₂ and q₃ is 0.23 J.What is the potential energy for the pair q₁ and q₃?

A helium nucleus is accelerated from rest through a potential difference V to a kinetic energy of 3.2 $\times$ 10^-13 J.What is V?

The potential energy of a 3.5 pC charge separated by 6.2 cm from a 1.6 $\mu$ C charge is

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 3.6 $\mu$ C charge is moved from a position where its electric potential energy is 7.2 my to a position where its potential energy is 1.8 my.What is the potential at the first position?