Question

1. Three charged particles (their sign are shown) move along the path in a uniform electric field
as shown. In each of three cases, state whether the potential energy increases or decreases?
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Answer 1

(A) Potential energy decreases

(B) Potential energy increases

(C) Potential energy decreases

Because electric potential is the work done against the direction of electric field.

So

1) Direction of electric field for +ive charge = outward the charge

2) Direction of electric field for -ive charge = toward the charge