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If the plates...

Question

If the plates of a capacitor are joined together by a conducting wire, then its capacitance :

A

remains unchanged

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B

decreases

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C

become zero

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D

becomes infinite

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Solution

The correct option is D becomes infinite
When two plates is connecting by a wire, the potential difference (V) between the plates become zero.
thus, the capacitance $C = Q / V = Q / 0 = \infty .$

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