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If 36 J of work is done in moving a charge Q across 8 V, find Q (in coulombs).

Question

If 36 J of work is done in moving a charge Q across 8 V, find Q (in coulombs).

A.

288

B.

9

C.

4.5

D.

16

Solution

Correct option is C

Using the formula for electric potential energy:
W = QV
Rearrange to find Q :
Q = W/V = 36/8 = 4.5C

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