Question

1.A cell of emf 4 V and internal resistance 1 ohm is connected to a d.c. source of 10 V through a resistor of 5 ohm. Calculate the terminal voltage across the cell during charging. 2.The potential difference across a cell is 1.8V when a current of 0.5 A is drawn from it. The p.d. falls to 1.6V when a current of 1.0A is drawn. Find the emf and the internal resistance of the cell. 3.A 9 V battery is connected in series with a resistor. The terminal voltage is found to be 8 V. Current through the circuit is measured as 5 A. What is the internal resistance of the battery ?

Answer 1