In the circuit shown below the internal resistance of the cell is 0.2Ω. The electromotive force of the cell is 6V. What is the voltmeter reading when the current flowing through the cell is 2A?

A5.4 V

B5.6 V

C5.8 V

D6.0 V

Explanation: Terminal voltage V = EMF - I×r = 6 - 2×0.2 = 6 - 0.4 = 5.6V. Answer B.

ZIMSEC Physics Paper 1, November 2002, Q19

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