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If and uncharged capacitor is charged by...

If and uncharged capacitor is charged by connected it to a battery, then the amount of energy lost as heat is.

A

`0.5CV^(2)`

B

`CV^(2)`

C

`2CV^(2)`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
a
The battery needs to supply 2CV charge to reverse the polarity. Energy stored remains same hence work done by the battery
`(W_(b)=(2CV)V=2CV^(2))` is lost as heat in recharging.
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MODERN PUBLICATION-ELECTROSTATIC POTENTIAL AND CAPACITANCE -Competition file (MULTIPLE CHOICE QUESTIONS based on a given passage/comprehension)
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  2. If and uncharged capacitor is charged by connected it to a battery, th...

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  4. A capacitor C is charged to a potential V by a battery. It is then dis...

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  5. Passage II We have two parallel plate capacitors P and Q having sam...

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  6. Two parallel plate capacitors of capacitances C and 2C are connected i...

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  7. Passage II We have two parallel plate capacitors P and Q having sam...

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  8. Passage II We have two parallel plate capacitors P and Q having sam...

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  9. Passage II We have two parallel plate capacitors P and Q having sam...

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  10. Passage II We have two parallel plate capacitors P and Q having sam...

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  11. Passage II We have two parallel plate capacitors P and Q having sam...

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  12. Passage II We have two parallel plate capacitors P and Q having sam...

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