Question

Five capacitors, each of capacitance value $C$ are connected as shown in the figure. The ratio of capacitance between $P$ & $R$, and the capacitance between $P$ & $Q$, is :

• A. $3:1$
• B. $5:2$
• C. $2:3$
• D. $1:1$

Answer 1

The correct option is C $2:3$

For the both cases the equivalent circuits are shown in figure.

For (1) the equivalent capacitance between P and R is $C_{PR}=C/2+C/3=5C/6$

For (2) the equivalent capacitance between P and Q is $C_{PQ}=C+C/4=5C/4$

Thus, $C_{PR}:C_{PQ}=5C/6:5C/4=2:3$