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A capacitor C is charged to a potential ...

A capacitor `C` is charged to a potential difference `V` and battery is disconnected. Now if the capacitor plates are brough close slowely by some distance:

A

some + ve work is done by external agent

B

energy of capacitor will decrease

C

energy of capacitor will increase

D

none of the above

Text Solution

Verified by Experts

The correct Answer is:
B
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MOTION-Capacitance -EXERCISE -2
  1. A capacitor of capacitance C is initially charged to a potential diffe...

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  2. Two dielectric slabs of constant K1 and K2 have been filled in between...

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  3. A capacitor C is charged to a potential difference V and battery is di...

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  4. The capacitance of a parallel plate capacitor is 2.5muF when it is hal...

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  5. Four identical plates 1,2,3 and 4 are placed parallel to each other at...

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  6. The capacity of a parallel plate condenser is 5muF. When glass plate i...

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  7. Two identical capacitors 1 and 2 are connected in series to a batery a...

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  8. A capacitor stores 60muC charge when connected across a battery. When ...

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  9. In the above question, if the initial capacitance of the capacitor was...

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  10. A parallel plate capacitor is connected to a battery and inserted a di...

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  11. A parallel plate capacitor has a capacity C. The separation between pl...

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  12. An air capacitor of 1muF is immersed in a transformer oil of dielectri...

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  13. A parallel plate condenser is immersed in an oil of dielectric constan...

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  14. A capacitor of capacitance 100(mu)F is connected across a battery of e...

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  15. A capacitor of capacitance 0.1 muF is charged to a certain potential t...

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  16. The electric field between the plates of a parallel-plate capacitor of...

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  17. A 5.0(mu)F capacitor having a charge of (20 (mu)C)is discharged throug...

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  18. A charged capacitor is allowed to discharge through a resistor by clo...

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  19. In the circuit shown in the figure, the switch S is initially open and...

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  20. When the key E is pressed at time t = 0, which of the following statem...

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