When a resistance of 2 Ohm is connected across the terminals of a cell, the current is 0.5 A. If a resistance of 5 Ohm is connected across the cell then the current is 0.25 A then the emf of the cell is:
A. 2V
B. 1.5 V
C. 1 V
D. 0.5 V
Answer:B
When a resistance of 2 Ohm is connected across the terminals of a cell, the current is 0.5 A. If a resistance of 5 Ohm is connected across the cell then the current is 0.25 A then the emf of the cell is:
A. 2V B. 1.5 V C. 1 V D. 0.5 V