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Question

What is the potential difference between the terminals of a battery if 250 J of work is required to transfer 20 C of charge from one terminal of the battery to the other?

A
10.5 V
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B
12.5 V
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C
15.5 V
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D
17.5 V
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Solution

The correct option is B 12.5 V
Given:
w=250 J
q=20 C

So, the potential difference between the terminals of the battery is,

ΔV=wq

ΔV=25020=12.5 V

Hence, option (B) is the correct answer.

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