Question

If a voltmeter of resistance $1000\Omega$ is connected across a resistance of $500\Omega$ in the given circuit, then the reading of voltmeter will be

• A. $1V$
• B. $2V$
• C. $6V$
• D. $4V$

Answer 1

The correct option is D $4V$

Total current through the circuit
$i=\frac{10}{\frac{1000}{3}+500}=\frac{3}{250}A$
$\therefore$ Voltmeter reading
$=i_v\times R_v=\frac{2}{3}\times \frac{3}{250}\times 500=4V$