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50  Ω  and  100Ω resistors are connected in series. This connection is connected with a battery of 2.4 volts. When a voltmeter of 100Ω resistance is connected across 100Ω resistor, then the reading of the voltmeter will be

a
1.6 V
b
1.0 V
c
1.2 V
d
2.0 V

detailed solution

Correct option is C

Equivalent resistance of the circuit, Req=100 ΩCurrent through the circuit, i=2.4100 APotential difference across combination of voltmeter and 100 Ω resistance R=2.4100 ×  50=1.2  V Since the voltmeter and 100 Ω resistance are in parallel, so the voltmeter reads the same value i.e., 1.2V.

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