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In 20s, a charge of 25 C leaves a batter...

In 20s, a charge of 25 C leaves a battery, and 200J of energy are delivered to an outside circuit as a result.
(a) What is the p.d across the battery?
(b) What current flows from the battery?

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The correct Answer is:
(a) 8V (b) 2.5A
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LAKHMIR SINGH & MANJIT KAUR-ELECTRICITY -Exercise
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