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A conducting sphere of radius R carrying charge Q lies inside an uncharged conducting shell of radius 2R.if they are joined by a metal wire, the amount of heat that will be produced is A. KQ^2/4R b.KQ^2/2R.. Please provide the steps to reach answer

A conducting sphere of radius R carrying charge Q lies inside an uncharged conducting shell of radius 2R.if they are joined by a metal wire, the amount of heat that will be produced is 
A. KQ^2/4R    b.KQ^2/2R..
Please provide the steps to reach answer

Grade:12

2 Answers

Abhinav
askIITians Faculty 387 Points
6 years ago
as shells are joined by a metal wire all the charge will get transfer to outer shell.
and the heat produced will be equal to change in potential energy.
i.e.
KQ2/2R

suvidhi mehta
292 Points
3 years ago
in this wont we include self energy.
 
 

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