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A capacitor of capacitance C is charged ...

A capacitor of capacitance C is charged by connecting it to a battery of emf epsilon. The capacitor is now disconnected and reconnected to the battery with the polarity reversed. Calculate the heat developed in the connecting wires.

Text Solution

Verified by Experts

From figure
Net charge flow through
battery = `=Q_("final")-Q_("initial")=epsilon C-(-epsilon C)=2 epsilon C`
`:. ` work done by battery (W) `=QxxV=2 epsilon C xx epsilon =2 epsilon^(2)C`
or Heat produced `= 2 epsilon^(2)C`
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