What is the potential difference between the terminals of a battery if 250J of work is required to transfer 20C of charge from one terminal of the battery to the other?
A
10.5V
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B
12.5V
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C
15.5V
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D
17.5V
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Solution
The correct option is B12.5V Given: w=250J q=20C
So, the potential difference between the terminals of the battery is,