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Question: If 20 J of work has to be done to move an electric charge of 4 C from a point, where potential is 10...

If 20 J of work has to be done to move an electric charge of 4 C from a point, where potential is 10 V to another point, where potential is V volt, find the value of V-

A

2 volt

B

70 volt

C

5 volt

D

15 volt

Answer

15 volt

Explanation

Solution

Work done by external source

Wext = q(VF – Vi), 20 = 4(V – 10); V = 15 volt.