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Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityElectrical PowerMedium2 minPYQ_2022

PhysicsMediumsingle choice

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

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Answer:

Solution:

Efficiency is given by $η = \frac{output}{input}$ $= \frac{5 \times 15 \times 14}{10 \times 8 \times 15} = 0.875 or 87.5%$

Stream:VITEEESubject:PhysicsTopic:Current ElectricitySubtopic:Electrical Power

⏱ 2mℹ️ Source: PYQ_2022

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