A high-resistance voltmeter reads 3.0V when connected across the terminals of a battery on open...

JAMB 1982

A high-resistance voltmeter reads 3.0V when connected across the terminals of a battery on open circuit and 2.6V when the battery supplies a current of 0.2A through a lamp. The resistance of lamp is

A. 2.00\(\Omega\)
B. 13.00\(\Omega\)
C. 0.52\(\Omega\)
D. 0.13\(\Omega\)
E. 1.50\(\Omega\)

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Correct Answer: Option B

Explanation

IR = 2.6 and Ir = 0.4

0.2 x R = 2.6

R = 13.00\(\Omega\)

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A high-resistance voltmeter reads 3.0V when connected across the terminals of a battery on open...

Correct Answer: Option B

Explanation

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