Two identical cells each of emf 1.5 V are connected in series across a 10 17 resistance. An ideal voltmeter connected across 10 
resistance reads 1.5V. The internal resistance of each cell is_____ 
.
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(5)
Let 
Using V = iR
The voltmeter reading is V’ = 1. 5 V.
Thus,
iR 1 = V
20 = 10 + 2 r
2r=10
r = 5 
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