Question

For the following circuit diagram, what is the equivalent capacitance between points $A$ and $B$?



$[$0.77 Mark$]$

• A. $9\mu \text{F}$
• B. $1\mu \text{F}$
• C. $6\mu \text{F}$
• D. $12\mu \text{F}$

Answer 1

The correct option is A $9\mu \text{F}$

If two points in a circuit are directly connected by a wire, then those two points will be at same potential. So the circuit can be visualized as follows.

Now the circuit can be redrawn as follows.


All the three capacitors are in parallel.
Thus, $C_{eq}=3+3+3=9\mu \text{F}$