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NEET 2006 (AIPMT) · Energy Stored & Force between Plates

Energy Stored & Force between Plates question from NEET 2006 (AIPMT)

Q36NEET 2006 · AIPMTEasy

Energy Stored & Force between Plates

A parallel plate air capacitor is charged to a potential difference of V volts. After disconnecting the charging battery the distance between the plates of the capacitor is increased using an insulting handle. As a result the potential difference between the plates

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Answer: (a)

Battery disconnected, so $Q$ is constant.
$d$ increases $\Rightarrow C = \frac{\varepsilon_0 A}{d}$ decreases.
$V = \frac{Q}{C}$ therefore increases.
So the answer is (a) increases.

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