A) internal resistance is equal to external resistance
B) internal resistance is greater than external resistance
C) internal resistance is less than external resistance
D) none of the above
Correct Answer: A
Solution :
Let n cells are connected in series, and such m series are connected in parallel. Let the emf of each cell be E and the internal resistance be r. This battery of cells is sending current in an external resistance R. Then current in the external circuit be \[i,\]then \[i=\frac{mnE}{nr+mR}\]You need to login to perform this action.
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