In an electrical circuit, a battery is connected to pass $20\, C$ of charge through it in a certain given time. The potential difference between two plates of the battery is maintained at $15\, V$. The work done by the battery is ........... $J$.
JEE MAIN 2021, Easy
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Work done by battery $= Q (\Delta V )$
$\Rightarrow 20 \times 15=300 J$
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