JEE PHYSICS MCQ: CURRENT ELECTRICITY

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Analyzing +4 | -1

An uncharged capacitor having capacitance

C

is connected across a battery of emf

V

. Now the battery is disconnected and reconnected across same battery but with reverse polarity, then the ratio of total thermal energy produced to the total energy supplied by the battery is

View answer and explanation

Correct option: C

\frac{2}{3}

Option C (

\frac{2}{3}

) is correct because the total thermal energy produced is

2CV^2

and the total energy supplied by the battery is

3CV^2

, giving a ratio of

\frac{2}{3}

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