$50\,\Omega $ and $100\,\Omega $ resistors are connected in series. This connection is connected with a battery of $2.4\, volts$. When a voltmeter of $100\,\Omega $ resistance is connected across $100\,\Omega $ resistor, then the reading of the voltmeter will be ............. $V$
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Equivalent resistance of the circuit ${R_{eq}} = 100\,\Omega $
current through the circuit $i = \frac{{2.4}}{{100}}\,A$
$P.D.$ across combination of voltmeter and $100\,\Omega$ resistance $ = \frac{{2.4}}{{100}} \times 50 = 1.2\,V$
Since the voltmeter and $100\,\Omega$ resistance are in parallel, so the voltmeter reads the same value i.e. $1.2\,V.$
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