Two particles carrying charges q1 and q2 are separated by a distance r and exert an electric force F⃗ E on each other. If q1 is doubled, what change must you make to one of the other variables in order to keep the magnitude FE constant? There is more than one answer.

Question

Physics

Raina Mclaughlin

7 July, 22:59

Two particles carrying charges q1 and q2 are separated by a distance r and exert an electric force F⃗ E on each other. If q1 is doubled, what change must you make to one of the other variables in order to keep the magnitude FE constant? There is more than one answer.

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Answers (1)

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Eli Jackson · Answer 1

q2 must also be doubled

r may also be halved

Explanation:

According to Coulumbs law

F = K q1 q2/r^2

If q1 is doubled, we must necessarily double q2 and r may also be halved in order to maintain F at the same value. Once the value of F is thus kept constant and E is also constant, the product FE must remain constant.