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A cell to emf. E and internal resistance...

A cell to emf. E and internal resistance r supplies currents for the same time t through external resistance`R_1 and R_2` respectively. If the heat produced in both cases is the same, then the internal resistance is given by :

A

`28.6 Omega`

B

`80 Omega`

C

`63.3 Omega`

D

`140 Omega`

Text Solution

Verified by Experts

The correct Answer is:
C
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