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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 stored energy of the capacitor increasesB. charge on capacitor increasesC. voltage of the capacitor increasessD. the capacitance increases

Answer» Correct Answer - A::C
As, `Q` reamains constant after disconnecting the battery , `C = (in_(0) A)/(d)` decreases, as `d` increases, As `Q` is constant `C_(i) V_(i) = C_(f) V_(f)`
`C_(f) lt C_(i)` So `V_(f) gt V_(i)`
so voltage increases
As `U = (1)/(2) QV, U prop V`, So `U_(f) gt U_(i)` as `V_(f) gt V_(i)`


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