Suppose a system consists of point charges which have fixed positions within that system. If the point charges were allowed to move and there is no other force present other than the electrostatic force between the charges, then what can we say about the change in potential energy of the system?

Suppose a system consists of point charges which have fixed positions within that system. If the point charges were allowed to move and there is no other force present other than the electrostatic force between the charges, then what can we say about the change in potential energy of the system?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter7: Electric Potential

Section: Chapter Questions

Problem 29P: Consider a charge Q1(1+5.0C) fixed at a site with another charge Q2 (Charge +3.0C , mass 6.0g )...

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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

Suppose a system consists of point charges which have fixed positions within
that system. If the point charges were allowed to move and there is no other
force present other than the electrostatic force between the charges, then what
can we say about the change in potential energy of the system?
A. It remains the same.
B. It always increases.
C. It oscillates, increasing and then decreasing and so on.
D. It always decreases.
E. Impossible to say.

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