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Byju's Answer

Standard XII

Physics

Energy of a Capacitor

A capacitor o...

Question

A capacitor of capacitance 10 $μ$ F is charged by connecting through a resistance of 20 ohm and a battery of 20 V. What is the energy supplied by the battery?

Less than 2 m J

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2 m J

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More than 2 m J

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Cannot be predicted

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Solution

The correct option is D More than 2 m J
The energy supplied by the battery will be $P = \frac{V^{2}}{R} = \frac{20^{2}}{20} = 20 J$
So it is more than $2 m J$

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A capacitor of capacitance 10μF is charged by connecting through a resistance of 20 ohm and a battery of 20 V. What is the energy supplied by the battery?

The correct option is D More than 2 m J The energy supplied by the battery will be P=V2R=20220=20JSo it is more than 2mJ

A capacitor of capacitance 10 $μ$ F is charged by connecting through a resistance of 20 ohm and a battery of 20 V. What is the energy supplied by the battery?

The correct option is D More than 2 m J
The energy supplied by the battery will be $P = \frac{V^{2}}{R} = \frac{20^{2}}{20} = 20 J$
So it is more than $2 m J$