Question 686: Electrostatics & Capacitance

Question

Two identical capacitors are first connected in series and then in parallel. The ratio of equivalent capacitance is

Accepted Answer

Capacitor in series $$\frac{1}{C_s}=\frac{1}{C}+\frac{1}{C}=\frac{2}{C}$$
$$\Rightarrow \quad C_s=\frac{C}{2}$$
Capacitor in parallel $$C_p=C+C=2 C$$
$$	herefore \quad \frac{C_s}{C_p}=\frac{C}{2 	imes 2 C}=\frac{1}{4}$$

Answer

$$1: 1$$

Answer

$$1: 2$$

Answer

$$1: 3$$

Answer

$$1: 4$$

Electrostatics & Capacitance

Two identical capacitors are first connected in series and then in parallel. The ratio of equivalent capacitance is

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