Home
Class 12
PHYSICS
A parallel plate capacitor has a capacit...

A parallel plate capacitor has a capacity C. The separation between the plates is doubled and a dielectric medium is introduced between the plates. If the capacity now becomes 2C, the dielectric constant of the medium is

A

1

B

2

C

3

D

4

Text Solution

Verified by Experts

The correct Answer is:
D
d. = 2d , C. = 2C
`implies (Aepsilon_0k)/(2d)=2(Aepsilon_0)/d implies k= 4`
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATICS

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Grouping of Capacitors)|58 Videos

  • ELECTROSTATICS

    ERRORLESS|Exercise PAST YEARS QUESTIONS|56 Videos

  • ELECTROSTATICS

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Electric Flux and Gauss.s Law)|27 Videos

  • ELECTRONICS

    ERRORLESS|Exercise Assertion & Reason|26 Videos

  • MAGNETIC EFFECTS OF CURRENT

    ERRORLESS|Exercise ASSERTION & REASON |18 Videos

Similar Questions

Explore conceptually related problems

A parallel plate capacitor has a capacity C. The separation between plates is doubled and a dielectric medium is inserted between plates. The new capacity is 3C. The dielectric constant of medium is

A parallel plate air capacitor has a capacity of 2 pF. If the separation between its plates is doubled and a mica sheet is introduced between its plates, its capacity becomes 6 pF. What is the dielectric constant of mica?

There is an airfilled capacitor of capacity C. when the plate separation is doubled and a dielectric is introduced between the plates, the capacitance becomes 2 C. the dielectric constant of the dielectric is

A parallel plate air capacitor has capacitance 18 mu F. If the distance between the plates is tripled and dielectric medium is introduced the capacitance becomes 72 mu F. The dielectric constant of the medium is :-

An air filled parallel capacitor has capacity of 2pF. The separation of the plates is doubled and the interspaces between the plates is filled with wax. If the capacity is increased to 6pF, the dielectric constant of was is

A capacitor has a capacity C, when air is present between the two plates. If a dielectric of value k is placed between the plates, the new capacity C will be equal to

A parallel plate capacitor with air between the plates has a capacitance C. If the distance between the plates is doubled and the space between the plates is filled with a dielectric of dielectric constant 6, then the capacitance will become.

An air parallel plate capacitor has capacity C. When the area and distance between the plates is doubled, the capacitance is C_(1) , then (C_(1))/(C ) is -

ERRORLESS-ELECTROSTATICS-NCERT BASED QUESTIONS (Capacitance)
  1. Increasing the charge on the platesof a capacitor means

    Text Solution

    |

  2. The capacity of a parallel plate condenser is 15 mu F when the...

    Text Solution

    |

  3. A parallel plate capacitor has a capacity C. The separation between th...

    Text Solution

    |

  4. A parallel plate air capacitor of capacitance C is connected to a cell...

    Text Solution

    |

  5. The potential energy of a charged parallel plate capacitor is U(0). If...

    Text Solution

    |

  6. If the charge on a capacitor is increased by 2 coulomb, the energy sto...

    Text Solution

    |

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

    Text Solution

    |

  8. A parallel plate capacitor is charged to a potential difference of 50 ...

    Text Solution

    |

  9. Consider a parallel plate capcaitor with plates 20 cm by 20 cm and sep...

    Text Solution

    |

  10. C,V,U and Q are capacitance, potential difference, energy stored and c...

    Text Solution

    |

  11. There is an air filled 1pF parallel plate capacitor. When the plate se...

    Text Solution

    |

  12. A 6muF capacitor charged from 10 volts to 20 volts. Increase in energy...

    Text Solution

    |

  13. A parallel- plate capacitor has plate area 100cm^2 and plate separatio...

    Text Solution

    |

  14. A capacitor is charged with a battery and energy stored is U. After di...

    Text Solution

    |

  15. In a parallel plate capacitor with plate area A and charge Q, the forc...

    Text Solution

    |

  16. A 2 muF capacitor is charged to 100 V, and then its plates are connect...

    Text Solution

    |

  17. A parallel plate air capacitor is charged to a potential difference of...

    Text Solution

    |

  18. Two metallic spheres of radii 1 cm and 2 cm are given charges 10^(-2) ...

    Text Solution

    |

  19. A variable condenser is permanently connect to a 100V battery. If the ...

    Text Solution

    |

  20. A parallel plate capacitor having a plate separation of 2mm is charged...

    Text Solution

    |