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Q.

A 4 $μF$ capacitor is charged by a 200 V battery. It is then disconnected from the supply and is connected to another uncharged 2 $μF$ capacitor. During the process loss of energy (in J) is

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a

$2.67 \times 10^{- 2}$

b

$4 \times 10^{- 2}$

c

0

d

$5.33 \times 10^{- 2}$

answer is D.

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Detailed Solution

$ΔH = \frac{1}{2} \frac{C_{1} C_{2}}{C_{1} + C_{2}} {(V_{1} - V_{2})}^{2}$

for un charged capacitor $V_{2}$ =0

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A 4 μF capacitor is charged by a 200 V battery. It is then disconnected from the supply and is connected to another uncharged 2μF capacitor. During the process loss of energy (in J) is