A charge of + 10 nC is distributed uniformly along the circumference of a circle with a radius of 10 cm. How much external energy is required to bring a charge of + 20 mC from infinity to the center of the circle?

A charge of + 10 nC is distributed uniformly along the circumference of a circle with a radius of 10 cm. How much external energy is required to bring a charge of + 20 mC from infinity to the center of the circle?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter5: Electric Charges And Fields

Section: Chapter Questions

Problem 88P: Charge is distributed along the entire x-axis uniform density . How much work does the electric...

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.

Question

A charge of + 10 nC is distributed uniformly
along the circumference of a circle with a
radius of 10 cm. How much external energy
is required to bring a charge of + 20 mC
from infinity to the center of the circle?
A. 18 J
B. 180 J
C. 18 J
D. 180 J
E. 0.9 J

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