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

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.