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NEET 2004 Physics question

PhysicsCurrent ElectricityNEET 2004

A battery is charged at a potential of 15V for 8 hours when the current flowing is 10A. The battery on discharge supplies a current of 5A for 15 hours. The mean terminal voltage during discharge is 14 V. The "Watt hour" efficiency of the battery is :-

Answer: (3)

Solution

Watt-hour efficiency . Input energy $= 15\ V× 10\ A× 8\ h =

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Question ID VK-089381