Question

In the adjoining figure the potential difference between $X$ and $Y$ is $60\,V$. The potential difference the points $M$ and $N$ will be

• A. $10\, V$
• B. $15\, V$
• C. $20\, V$
• D. $30\, V$

Answer 1

Answer: (D)

$30\, V$

Answer 2

Capacitors in series
$2 C_{1} \times V_{1}=C \times V_{2}$
$2 V_{1}=V_{2}$ ...(i)
and $V_{1}+V_{2}+V_{1}=60$ ...(ii)
Solving Eqs. (i) and (ii), we get
$V_{2}=30\, V$