Consider a capacitor connected with a battery, capacitor is in steady state. Now plates of capacitor are drawn apart so as to double the separation in two cases. Case : (i) Battery remains connected (ii) Battery is disconnected Mark the CORRECT statement:
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Question

Consider a capacitor connected with a battery, capacitor is in steady state. Now plates of capacitor are drawn apart so as to double the separation in two cases. Case : (i) Battery remains connected (ii) Battery is disconnected Mark the CORRECT statement:

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G1 Physics · Accepted Answer

Use Q = CV, U = ½CV² and C = εA/d; reduce the capacitor network by series/parallel combination and apply charge conservation where a node is isolated. The result matches C (In case (ii) energy of capacitor increases).