Home
Class 12
PHYSICS
A capacitor of capacity C is connected w...

A capacitor of capacity `C` is connected with a battery of potential `V` in parallel. The distance between its plates is reduced to half at one, assuming that the charge remains the same. Then to charge the capacitance upto the potential `V` again, the energy given by the battery will be

A

`CV^(2)//4`

B

`CV^(2)//2`

C

`2CV^(2)//4`

D

`CV^(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATIC POTENTIAL AND CAPACITORS

    DC PANDEY|Exercise (B) Chapter exercises|20 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITORS

    DC PANDEY|Exercise (C) Chapter exercises|50 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITORS

    DC PANDEY|Exercise Check point 2.5|20 Videos

  • ELECTROMAGNETIC WAVES

    DC PANDEY|Exercise Sec C|22 Videos

  • ELECTROSTATICS

    DC PANDEY|Exercise Medical entrances gallery|37 Videos

Similar Questions

Explore conceptually related problems

If the capacitor is kept connected with the battery and then the dielectric slab is inserted between the plates, then what will be the change in the charge, the capacitance the potential difference, the electric field an the stored energy?

A capacitor is connected to a battery of 20 V, so that a charge of 100muC is obtained at the plates. The capacitance of the capacitor is

Passage II We have two parallel plate capacitors P and Q having same capacitance C_(0) . P is connected to a battery of potential difference V and it remains connected to the battery even after the charging is over. Q is also connected to a battery of the same potential difference V but after the charging gets over, it is disconnected from the battery. Answer the following questions: Potential difference between the plates of P, when a dielectric slab is inserted in between the plates

A parallel plate capacitor of capacitance C has been charged, so that the potential difference between its plates is V. Now, the plates of this capacitor are connected to another uncharged capacitor of capacitance 2C. Find the common potential acquired by the system and loss of energy.

DC PANDEY-ELECTROSTATIC POTENTIAL AND CAPACITORS-(A) Chapter exercises
  1. Eight drops of mercury of equal radii possessing equal charges combine...

    Text Solution

    |

  2. Consider a disconnected. Plate capacitor of capacity 10 muF with air f...

    Text Solution

    |

  3. A capacitor of capacity C is connected with a battery of potential V i...

    Text Solution

    |

  4. A parallel plate capacitor has plate separation d and capacitance 25 m...

    Text Solution

    |

  5. The capacity and the energy stored in a parallel plate condenser with ...

    Text Solution

    |

  6. A slab of copper of thickness b is inserted in between the plates of p...

    Text Solution

    |

  7. A capacitor when filled with a dielectric K = 3 has charge Q(0), volta...

    Text Solution

    |

  8. In the adjoining figure, four capacitors are shown with their respecti...

    Text Solution

    |

  9. Two condensers C(1) and C(2) in a circuit are joined as shown in fig...

    Text Solution

    |

  10. Three capacitors of 2 muF, 3 muF and 6 muF are joined in series and th...

    Text Solution

    |

  11. In the figure a potential of + 1200 V is given to point A and point B ...

    Text Solution

    |

  12. The charge on 4 mu Fcapacitor in the given circuit is ("in" muC)

    Text Solution

    |

  13. Four identical capacitors are connected as shown in diagram. When a ba...

    Text Solution

    |

  14. A dielectric slab of thickness d is inserted in a parallel plate capac...

    Text Solution

    |

  15. A 2 muF condenser is charged upto 200 V and then battery is removed. O...

    Text Solution

    |

  16. Consider two conductors. One of them has a capacity of 2 units and the...

    Text Solution

    |

  17. Two capacitors 2 muF and 4 muF are connected in parallel. A third cap...

    Text Solution

    |

  18. In the given circuit, if point b is connected to earth and a potential...

    Text Solution

    |

  19. A circuit is shown in the figure below. Find out the charge of the con...

    Text Solution

    |

  20. A potential of V = 3000 V is applied to a combination of four initiall...

    Text Solution

    |