Home
Class 12
PHYSICS
A capacitor has some dielectric between ...

A capacitor has some dielectric between its plates and the capacitor is connected to a source. The battery is now disconnected and then the dielectric is removed. State whether the capacitance, the energy stored in it, the electric field, charges stored and voltage will increase, decrease or remain constant.

Promotional Banner

Topper's Solved these Questions

  • Electrostatics

    CHETANA PUBLICATION|Exercise Exercise|73 Videos
  • Electromagnetic Induction

    CHETANA PUBLICATION|Exercise EXERCISE|109 Videos
  • Kinetic Theory of Gases and Radiation

    CHETANA PUBLICATION|Exercise Exercise|110 Videos

Similar Questions

Explore conceptually related problems

Discuss the analogy between energy stored in the electric field of the capacitor and the energy stored in the magnetic field in the inductor.

A 800 muF capacitor is charged by a 100V battery. After some time, the battery is disconnected. The capacitor is then connected to another 800muF capacitor. What is the electrostatic energy stored ?

An air filled capacitor has a capacitance 2p^f . Now the plate separation is doubled and the space is filled with dielectric medium, then the capacitance increase to 4_pF . The dielectric constant of dielectric medium is,

Capacity of a capacitor is 3muF . A slab of dielectric constant 4 is inserted between the plates and capacitor is charged to 200V and then isolated. What is the new potential difference if the dielectric slab is removed?

A parallel plate capacitor with air between the plates has a capacitance of 8 pF.What will be the capacitance if the distance between the plates is reduced by half, and the space between them is filled with a substance of dielectric constants 6 ?

In a capacitor of capacitance 20muF , the distance between the plates is 2 mm. If a dielectric slab of width 1 mm and dielectric constant 2 is inserted between the plates, what is the new capacitance?

If the difference between the radii of the two spheres of a spherical capacitor is increased, state whether capacitance will increase or decrease?

A charged parallel plate capacitor has a potential energy U. if a slab of dielectric constant k is inserted between the plates, then the new potential energy will be_

A capacitor of capacity C has a charge Q and stored energy is W. If the charge is increased to 3Q, the stored energy will be

CHETANA PUBLICATION-Electrostatics-Exercise
  1. A capacitor has some dielectric between its plates and the capacitor i...

    Text Solution

    |

  2. Calculate the total flux coming out from a closed surface enclosing a ...

    Text Solution

    |

  3. A charge of 6q is placed at the centre of a cube of side 2cm. What is ...

    Text Solution

    |

  4. Two charges - q and + q are located at points A(0,0, -a) and A(0,0, + ...

    Text Solution

    |

  5. If 20J of work is to be done in moving a charge of 100C from A to B, w...

    Text Solution

    |

  6. The electric potential at 45cm from a point charge is +100V. what is t...

    Text Solution

    |

  7. Two point charges 4muC and -2muC are separated by a distance of lm in ...

    Text Solution

    |

  8. The electric field at a point due to a point charge is 60 N//C and the...

    Text Solution

    |

  9. Twenty seven charged water droplets each with a diameter of 2mm and a ...

    Text Solution

    |

  10. Two point charges + 0.2muC and 0.01muC are placed 10cm apart. Calculat...

    Text Solution

    |

  11. The kinetic energy of a charged particle decreases by 10J as it moves ...

    Text Solution

    |

  12. The capacity of a capacitor becomes 20muF when gap between the capacit...

    Text Solution

    |

  13. Calculate the energy stored in a capacitor of 6muF when it is charged ...

    Text Solution

    |

  14. A 800 muF capacitor is charged by a 100V battery. After some time, the...

    Text Solution

    |

  15. Net capacitance of three identical capacitors in series is 1muF. What ...

    Text Solution

    |

  16. The capacity of a parallel plate air condenser is 8 muF. When air is r...

    Text Solution

    |

  17. Calculate the capacity of a sphere of radius 1000m.

    Text Solution

    |

  18. Two capacitors each of capacitance 5muF and a battery of emf 240 volt....

    Text Solution

    |

  19. Figure shows a network of five capacitors connected to a 100V supply. ...

    Text Solution

    |

  20. Net capacitance of three identical capacitors in series is 1muF. What ...

    Text Solution

    |

  21. Capacity of a capacitor is 3muF. A slab of dielectric constant 4 is in...

    Text Solution

    |