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

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A. 1.85Ω
B. 2.0Ω
C. 2.4Ω
D. 4.5Ω
E. 5.0Ω

Correct Answer:

Option B – 2.0Ω

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