Home
Class 12
PHYSICS
The capacity of a condenser in which a d...

The capacity of a condenser in which a dielectric of dielectric constant 5 has been used, is C. If the dielectric is replaced by another with dielectric constant 20, the capacity will become

A

4C

B

2C

C

`C/2`

D

`C/4`

Text Solution

Verified by Experts

The correct Answer is:
A
`C_(S)=48/86=24/43muF`
`Cpropk`
`therefore" "C_(2)/C_(1)=k_(2)/k_(1)`
`C_(2)=(20xxC)/5=4C`
Promotional Banner

Topper's Solved these Questions

  • ELECTRONS AND PHOTONS

    NIKITA PUBLICATION|Exercise MCQs|162 Videos

  • GRAVITATION

    NIKITA PUBLICATION|Exercise Multiple Choice Questions|409 Videos

Similar Questions

Explore conceptually related problems

The dielectric constant of a metal is

When air is replaced by a dielectric medium of constant K , the capacity of the condenser.

The capacity of a parallel plate condenser filled with material of dielelctric constant 8 is 16 muF . Its capacity, if the dielectric is removed , will be

When air in between the plates of a capacitor is replaced by mica of dielectric constant 6, its capacity

The capacity of a parallel plate condenser with dielectric constant 10 is 16xx10^(-6)F . If the dielectric is removed, then the new capacity will be

What is the dielectric constant of metal ?

For metals the value of dielectric constant (K) is

NIKITA PUBLICATION-ELECTROSTATICS-Multiple Choice Questions
  1. In figure (below) the charge on the 1.5muF capacitor is

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  5. Three capacities of respective capacities 6, 4 and 2muF are connected ...

    Text Solution

    |

  6. Five capacitors, each of capacitance value C are connecteed as shown i...

    Text Solution

    |

  7. In a parallel plate capacitor , the capacity increases if

    Text Solution

    |

  8. A capacitor of 20 muF is charged to 500 volts and connected in paralle...

    Text Solution

    |

  9. The capacitance between the points A and B in the given circuit will b...

    Text Solution

    |

  10. A 4muF capacitor is charged to 400 V. If its plates are joined through...

    Text Solution

    |

  11. In the figure, three capacitors each of capacitance 6 pF are connected...

    Text Solution

    |

  12. A 700 pF capacitor is charged by a 50 V battery. The electrostatic ene...

    Text Solution

    |

  13. In fig. C(1) = 20 muF, C(2) = 30 muF and C(3) = 15 muF and the insulat...

    Text Solution

    |

  14. What is T.N.E.I. through the surface A and B respectively ?

    Text Solution

    |

  15. The number of tubes of force through a charge 'q' is

    Text Solution

    |

  16. A parallel plate capacitor of 6 mu F is connected across 18 V ...

    Text Solution

    |

  17. Four capacitors are connected as shown in figure. The equivalent capac...

    Text Solution

    |

  18. Ampere second is a unit of

    Text Solution

    |

  19. The capacity of a parallel plate condenser is 12muF. Its capacity, whe...

    Text Solution

    |

  20. A metal surface of area 1 m^(2) is charged with sqrt(8.85)muC in air. ...

    Text Solution

    |