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NEET 2007

Exam: NEET
Year: 2007
Subject: Physics
Chapter: Capacitance

NEET 2007 · Physics · Capacitance

Two condensers, one of capacity C and other of capacity C / 2 are...

Two condensers, one of capacity

C

and other of capacity

C / 2

are connected to a

V

-volt battery, as shown. The work done in charging fully both the condensers is Two condensers, one of capacity C and other of capacity C / 2 are connected to a V -volt battery, as shown. The work

Two condensers, one of capacity C and other of capacity C / 2 are connected to a V -volt battery, as shown. The work

Options

A $\frac{1}{4} C V^2$
B $\frac{3}{4} C V^2$
C $\frac{1}{2} C V^2$
D $2 \mathrm{CV}^2$

Correct answer

B. $\frac{3}{4} C V^2$

Step-by-step solution

Work done in charging fully both the condensers

\begin{aligned} & =\frac{1}{2} C V^2+\frac{1}{2}\left(\frac{C}{2}\right) V^2 \\ & =\frac{3}{4} C V^2 \end{aligned}

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