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When a number of liquid drops each of su...

When a number of liquid drops each of surface charge density `sigma ` and energy E combine, a large drop is formed. If the charge density of the large drop is 3 `sigma` , its energy is

A

`81E `

B

`3E `

C

`27E `

D

`243E`

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Verified by Experts

The correct Answer is:
D
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AAKASH SERIES-APPENDICES ( REVISION EXERCISE )-REVISION EXERCISE (ELECTRIC POTENTIAL & CAPACITANCE )
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  2. A spherical drop of capacitance 1 muF is broken into eight drop of equ...

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  3. When a number of liquid drops each of surface charge density sigma an...

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  5. A condenser of capacity C(1) is charged to a potential V(0) the elect...

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  6. A parallel plate capacitor is filled with a dielectric of dielectric c...

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  7. A parallel -plate capacitor with the plate area 100cm^2 and the separa...

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  8. A parallel plate capacitor has a uniform electric field E in the space...

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  9. One plate of a capacitor is fixed, and the other is connected to a spr...

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  10. In the given system a capacitor of plate area A is changed up to charg...

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  11. Identify A and B:

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  12. In the given circuit which of the following statement(s) is/are true ?

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  13. A capacitor of capacitance 10(mu)F is connected to a battery of emf 2V...

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  14. For a spherical capacitor shown at which points the electric field wil...

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  15. The numerical value of the charge on either plates of capacitor 'C' as...

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  16. The charge on 4 mu Fcapacitor in the given circuit is ("in" muC)

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  17. Three uncharged capacitors of capacities C1 ,C2 and C3 are connected ...

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  18. In the given figure capacitor of plate area A is changed upto charge q...

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  19. Space between the plates of a parallel plate capacitor is filled with ...

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  20. Force of attraction between the plates of area A of a parallel palte...

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