CUET and UG exam CUET UG 2025 Mock Test Series Physics Current, Resistance and Electricity Cells and Internal Resistance
The emf of a cell connected in a circuit is 'P' volts and its internal resistance is 'r' ohm. If another resistor of resistance 'r' ohm is connected externally, the potential difference across the cell is:
1
Pr
2
P/2
3
P/2r
4
P + r