Question

For the circuit shown in figure when voltmeter \( (V) \) is connected across \( 120 \Omega \) resistor, it gives reading of 60 V. The same voltmeter when connected across \( 40 \Omega \) resistor gives the reading of \( x V \). Value of \( x \), is

Answer 1

\(V=iR\)

\(i=\frac{60}{120}\)

\(i=0.5A\)

Both resistance are connected in series so current will be same in resistance

so

\(V=iR\)

\(V=\frac{0.5\times40}{10}\)

V= 20 V

Value of x will be 20.