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A parallel plate capacitor is charged and the charging battery is then disconnected. If the plates of the capacitor are moved farther apart by means of insulating handles:A. The charge on the capacitor increases.B. The voltage across the plates increases.C. The capacitance increases.D. The electrostatic energy stored in the capacitor increases. |
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Answer» Correct Answer - B::D b.,d. As battery is disconnected, hence `Q=` constnat, plates of capacitor are moved apart Hence `C` decreases `(C=(1)/(d))` Now, `V=(Q)/(C)` and `U=(Q^(2))/(2C)` `V="constant",C=KC_(0)` i.e., `CgtC_(0)` ltbgt `Q=CV,` i.e., `QgtQ_(0)` `U=(1)/(2)CV^(2),` i.e., `UltU_(0)` |
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