A set of n equal resistors, of value R each, are connected in series to a battery of emf E and internal resistance R. The current drawn is I. Now, the n resistors are connected in parallel to the same battery. Then the current drawn from battery becomes 10I. The value of n is
Text Solution
Verified by ExpertsThe correct answer is:
A
Current drawn from a battery when n resistors are connected in series is\
(i)
Current drawn from same battery when n resistors are connected in parallel is
(ii)
On dividing eqn. (ii) by (i), 
After solving the equation, 
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