In Figure (a), we move an electron from an infinite distance to a point at distance R = 5.20 cm from a tiny charged ball. The move requires work W = 1.11 x 10-13 J by us. (a) What is the charge Q on the ball? In Figure (b), the ball has been sliced up and the slices spread out so that an equal amount of charge is at the hour positions on a circular clock face of radius R = 5.20 cm. Now the electron is brought from an infinite distance to the center of the circle. (b) With that addition of the electron to the system of 12 charged particles, what is the change in the electric potential energy of the system? (a) (b)

University Physics Volume 2
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ISBN:9781938168161
Author:OpenStax
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Chapter5: Electric Charges And Fields
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Problem 98P: From a distance of 10 cm, a proton is projected with a speed of v=4.0106 m/s directly at a large,...
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In Figure (a), we move an electron from an infinite distance to a point at distance R = 5.20 cm from a tiny charged ball. The move requires work W = 1.11 x 10-13 ] by us. (a) What is the charge Q on the ball? In
Figure (b), the ball has been sliced up and the slices spread out so that an equal amount of charge is at the hour positions on a circular clock face of radius R = 5.20 cm. Now the electron is brought from an infinite
distance to the center of the circle. (b) With that addition of the electron to the system of 12 charged particles, what is the change in the electric potential energy of the system?
(a)
(b)
Transcribed Image Text:In Figure (a), we move an electron from an infinite distance to a point at distance R = 5.20 cm from a tiny charged ball. The move requires work W = 1.11 x 10-13 ] by us. (a) What is the charge Q on the ball? In Figure (b), the ball has been sliced up and the slices spread out so that an equal amount of charge is at the hour positions on a circular clock face of radius R = 5.20 cm. Now the electron is brought from an infinite distance to the center of the circle. (b) With that addition of the electron to the system of 12 charged particles, what is the change in the electric potential energy of the system? (a) (b)
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