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Question
In 10 s, charge of 25 C leaves a battery, and 200 J of energy are delivered to an outside circuit a result.
What is the p.d. across the battery?
Solution
Given:
Time, t = 10 s
Charge, Q = 25 C
Energy delivered = Work done, W = 200 J
Using the relation, V = W/Q
V = 200/25 = 8 V
So the p.d. across the battery is 8 volts.
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