Question

Four equal capacitors are connected to a battery as shown in the adjoining figure. The potentials of $P$ and $Q$ are

• A. $5V$ and $5V$
• B. $10V$ and $5V$
• C. $10V$ and $-10V$
• D. $5V$ and $-5V$

Answer 1

The correct option is C $10V$ and $-10V$

Consider the circuit as shown in figure.
It is clear that
$V_P-V_X=V_X-V_Q$ and $V_X=0$\therefore V_{P} = -V_{Q}$Also,$V_{P} - V_{Q} = 20V\therefore V_{P} = 10\ V$and$V_{Q} = -10\ V$.