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A parallel plate capacitor with air betw...

A parallel plate capacitor with air between the plates has a capacitance `2muF`. The capacity of the condenser when the distance between the plates is reduced to half of initial distance is

A

`3muF`

B

`4.4muF`

C

`2.4muF`

D

`4muF`

Text Solution

Verified by Experts

The correct Answer is:
D
`Cprop1/d`
`therefore" "C_(2)/C_(1)=d_(1)/d_(2)" "thereforeC_(2)=(C_(1)d_(1))/d_(2)=(2xxd_(1))/(d_(1)//2)=4muF.`
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NIKITA PUBLICATION-ELECTROSTATICS-Multiple Choice Questions
  1. A condenser having a capacity of 50muF is charged to a potential of 20...

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  2. The cell membrane of a resting nerve in a human body has a thickness o...

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  3. A parallel plate capacitor with air between the plates has a capacitan...

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  4. A conductor of capacity 2muF is charged to a potential of 200 V. If an...

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  5. A plane conductor with very large dimensions is charged such that surf...

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  6. Condensers of capacities 5F and 10F are connected in parallel in a cir...

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  7. A slab of copper of thickness b is inserted in between the plates of a...

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  8. In the following diagram, the effective capacitance between A and B is

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  9. An infinite number of identical capacitors each of capacitance 1 muF ...

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  10. The resultant capacitance between A and B in the following figure is e...

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  11. The effective capacity between A and B of the given network is

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  12. In the circuit shown, a potential difference of 60V is applied acrodd....

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  13. Refer to network shown in figure. The effective capacitance between a ...

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  14. In the adjoining circuit, the capacity between the points A and B will...

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  15. The resultant capacity between the points A and B in the adjoining cir...

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  16. Each edge of the cube contains a capacitance C. The equivalent capacit...

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  17. In figure (below) the charge on the 1.5muF capacitor is

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  18. The effective capacity between A and B in the figure given is (inmuF)

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  19. The capacity of a condenser in which a dielectric of dielectric consta...

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  20. The charge on 4muF capacitor in the given circuit (in muC) is

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