A cell sends a current through a resistance R for time t. Now the same cell sends current through another resistance r for the same time. If same amount of heat is developed in both the resistance then the internal resistance of cell is?

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Answer 1 · 2018-02-05T15:36:19

#sqrt(Rr)#

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Sorry I wrote the internal resistance as #r# it will be #x# in the circuit. I got obsessed with the conventional rule :-p