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Home  >>  AIMS  >>  Class12  >>  Physics  >>  Electric Charges and Fields
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The bob of a simple pendulum is a small metal ball of mass $m$. When it oscillates between the two uncharged plates of a parallel plate capacitor, its time period is T. What would be the effect on the time period if the metal ball is given a positive charge and the capacitor is charged as shown in adjacent figure?

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$T' < T.$
So, the time period is decreased.
answered Jun 5, 2014 by meena.p

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