SAT Subject Physics Practice Question 266: Answer and Explanation

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Question: 266

37. What would happen to the electrostatic force between a pair of charged particles if both charges were doubled and the distance between them were also doubled?

A. It would decrease by a factor of 4.
B. It would decrease by a factor of 2.
C. It would remain unchanged.
D. It would increase by a factor of 2.
E. It would increase by a factor of 4.

Correct Answer: C

Explanation:

Applying Coulomb’s law, we see that the electric force will not change.

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