Question

$A,B$ and $C$ are voltmeters of resistance $R,1.5R$ and $3R$ respectively as shown in the figure. When some potential difference is applied between $X$ and $Y$, the voltmeter readings are $V_A$, $V_B$ and $V_C$ respectively. Then

• A. $V_A=V_B\ne V_C$
• B. $V_A\ne V_B\ne V_C$
• C. $V_A=V_B=V_C$
• D. $V_A\ne V_B=V_C$

Answer 1

Answer: (C)

The current flowing in the different branches of circuit is indicated in the figure.

$V_A=IR$
$V_B=\frac{2I}{3}\times \frac{3}{2}R=IR$
$V_C=\frac{I}{3}\times 3R=IR$
Thus, $V_A=V_B=V_C$