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The capacitance of a parallel capacitor ...

The capacitance of a parallel capacitor is 5`mu`F. When glass slab inserting between two plates, its potential difference becomes `(1)/(8)` the times hence the dielectric constant of a slab ......

A

`1.6`

B

5

C

8

D

40

Text Solution

Verified by Experts

`C= (Q)/(V)` for air medium
` C = (Q)/(V)` for dielectric medium and C = KC
`:. (Q)/(V) = K (Q)/(V)`
`:. V = (V)/(K) `
`:. K = (V)/(V) ` but ` V = (V)/(8) :. K =8`
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KUMAR PRAKASHAN-ELECTROSTATIC POTENTIAL AND CAPACITANCE-Section D ( Multiple Choice Questions (MCQs) )
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  3. The capacitance of a parallel capacitor is 5muF. When glass slab inser...

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  5. Capacitance of spherical capacitor is 1 muF, so its diameter = ..........

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  6. By increasing the charge on the plate of capacitor .......... .

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  7. In the figure below the capacitance of ever capacitor is 3 muF. Find t...

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  8. 27 small drops of water having same chargt and same radius are combine...

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  9. If the charge on capacitor is increased by 5C, the energy stored in th...

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  10. The capacitance of a variable capacitor joined with a battery of 100 V...

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  11. 4 muF and 6 muF capacitors are joined in series and 500 V are applied ...

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  12. Two spherical shells of radius 20 cm and 10 cm, having same charge of ...

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  13. The area of every plate shown in the figure is A and the separation be...

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  14. The capacitance of a parallel plate capacitor formed by the circular p...

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  15. If a capacitor having capacitance of 600 muF is charged at a uniform r...

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  16. The capacitance of a capildtor is 10 muF . The potential difference on...

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  17. 3 identical capacitors are joined in parallel and are charged with a b...

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  18. To get 2F capacitance, the area of each plate kept at separation of 2 ...

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  19. Considering the earth as a metallic sphere its capacitance would be n...

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  20. If volume of Earth is V and area of Earth is A, then its capacitance w...

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