# College Physics Study Set 7

Physics & Astronomy

## Quiz 16 :Electrical Energy and Capacitance

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A proton (+1.6 * 10-19 C) moves 10 cm along the direction of an electric field of strength 3.0 N/C.The electrical potential difference between the proton's initial and ending points is:
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B

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An electron with velocity v = 1.0 * 106 m/s is sent between the plates of a capacitor where the electric field is E = 500 V/m.If the distance the electron travels through the field is 1.0 cm, how far is it deviated (Y) in its path when it emerges from the electric field? (me = 9.1 * 10-31 kg, e = 1.6 * 10-19 C)
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B

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If the distance between two isolated parallel plates that are oppositely charged is doubled, the electric field between the plates is essentially unchanged.However, the:
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A

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An ion is released from rest and moves due to the force from an electric field from a position in the field having a potential of 14 V to a position having a potential of 8 V.The ion:
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An electron is released from rest at the negative plate of a parallel-plate capacitor.If the distance across the plate is 5.0 mm and the potential difference across the plate is 5.0 V, with what velocity does the electron hit the positive plate? (me = 9.1 * 10-31 kg, e = 1.6 * 10-19 C)
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The quantity of electrical potential, the volt, is dimensionally equivalent to:
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A uniform electric field, with a magnitude of 600 N/C, is directed parallel to the positive x-axis. If the potential at x = 3.0 m is 1 000 V, what is the change in potential energy of a proton as it moves from x = 3.0 m to x = 1.0 m? (qp = 1.6 * 10-19 C)
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If an electron is accelerated from rest through a potential difference of 1 200 V, find its approximate velocity at the end of this process.(e = 1.6 * 10-19 C; me = 9.1 * 10-31 kg)
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A proton (+1.6 * 10-19 C) moves 10 cm on a path in the direction of a uniform electric field of strength 3.0 N/C.How much work is done on the proton by the electrical field?
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Which of the following characteristics are held in common by both gravitational and electrostatic forces when dealing with either point masses or charges?
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The unit of electrical potential, the volt, is dimensionally equivalent to:
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A 9.0-V battery is connected between two parallel metal plates 4.0 mm apart.What is the magnitude of the electric field between the plates?
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An electron (charge -1.6 * 10-19 C) moves on a path perpendicular to the direction of a uniform electric field of strength 3.0 N/C.How much work is done on the electron as it moves 15 cm?
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In which case does an electric field do positive work on a charged particle?
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A free electron is in an electric field.With respect to the field, it experiences a force acting:
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A uniform electric field, with a magnitude of 600 N/C, is directed parallel to the positive x-axis.If the potential at x = 3.0 m is 1 000 V, what is the potential at x = 1.0 m?
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An electron in a cathode ray tube is accelerated through a potential difference of 5.0 kV.What kinetic energy does the electron gain in the process? (e = 1.6 * 10-19 C)
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If the distance between two negative point charges is increased by a factor of three, the resultant potential energy is what factor times the initial potential energy?
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