Question

The value of equivalent capacitance of the combination shown in figure, between the points $P$ and $Q$ is

• A. $3C$
• B. $2C$
• C. $C$
• D. $C/3$

Answer 1

The correct option is A $3C$

A. 3C

the left C and C , capacitors are in parallel to the add up to equivalent of 2C

now, this 2C is in series with the left middle 2C so, it will add up to Ceq of C...

again this C is parallel with middle centre C , adding up to 2C

now again, this 2C is in series with the left upper 2C so, it will add up to Ceq of C...

and finally this C is in parallel with 2C

so, the final Ceq is $C+2C=3C$