A negative charge is moved to the right, in the same direction as an external el

Question

A negative charge is moved to the right, in the same direction as an external electric field, as shown. In this case, the electric field (A) does negative work on it and the potential energy increases. (B) does negative work on it and the potential energy decreases. (C) does positive work on it and the potential energy increases. (D) does positive work on it and the potential energy decreases. Answer using the following format First, pick the best response, and then write a brief justification. For example, D. This is true because...

Explanation / Answer

so F = q E

so force from electric field is to the left

so the force will do negative work

and dPE = -W

so PE increases

so a)

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