Question

The balance point in a potentiometer for a cell of emf 1.5 V is 60
cm. If a resistance of 5 Ω is connected in parallel with the cell and the new balance point shifts to 50 cm, what is the internal resistance of the cell?

A 1 Ω
B 2 Ω
C 3 Ω
D 4 Ω
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