MCQ
The equivalent capacitance of the combination shown in figure is:
- A$C$
- ✓$2C$
- C$\frac{\text{C}}{2}$
- DNone of these.
✓
Answer
Correct option: B.
$2C$
Since the potential at point $A$ is equal to the potential at point $B$, no current will flow along arm $A B$. Hence, the capacitor on arm $AB$ will not contribute to the circuit. Also, because the remaining two capacitors are connected in parallel, the net capacitance of the circuit is given by
$C_{\text {eq }}=C+C=2 C$
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