Physics WAEC / WASSCE 1996 Electricity and Magnetism
A cell of e.m.f. 1.5V is connected in series with a resistor of resistance 39. A high-resistance voltmeter connected across the cell registers only 0.9V. Calculate the internal resistance of the cell
A
1.85Ω
B
2.0Ω
C
2.4Ω
D
4.5Ω
E
5.0Ω