Home
Class 12
PHYSICS
A capacitor is charged with a battery an...

A capacitor is charged with a battery and energy stored is U. After disconnecting battery another capacitor of same capacity is connected in parallel with it. Then energy stored in each capacitor is:

A

`U//2`

B

U

C

2U

D

4U

Text Solution

Verified by Experts

The correct Answer is:
C

`U=Q^2/(2C)implies U prop 1/C`
Because Q = constant
as `C. =C/2 implies U. =2U`
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 capacitor is charged using a battery and energy stored is U. After disconnecting the battery, another uncharged capacitor of same capacitance is connected in parallel to the first capacitor. Then loss of energy is equal to

A capacitor is charged using a a battery and energy stored is U. After disconnecting the battery another uncharged capacitor of same capacitance is connected in parallel to the first capacitor. Then loss of energy is equal to

A 600pF capacitor is charged with 100 V battery . Calculate the energy stored and charge on the capacitor .

In a charged capacitor, the energy is stored in

A capacitor is chared to store an energy U . The charging battery is disconnected. An Identical capacitor is now connected to the first capacitor in parallel. The energy in each capacitor is now.

A capacitor of capacitance 1/3muF is connected to a battery of 300volt and charged. Then the energy stored in capacitor is

A 700 pF capacitor is charged by a 50 V battery. The electrostatic energy stored it is

A capacitor is charged by a battery. The battery is removed and another identical uncharged capacitor is connected in parallel. The total electrostatic energy of resulting system:

ERRORLESS-ELECTROSTATICS-NCERT BASED QUESTIONS (Capacitance)
  1. A 6muF capacitor charged from 10 volts to 20 volts. Increase in energy...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  10. A capacitor is used to store 24 watt hour of enegy at 1200 volt. What ...

    Text Solution

    |

  11. A charge of 40 mu C is given to a capacitor having capaci...

    Text Solution

    |

  12. The electric field between the plates of a parallel plate capacitor is...

    Text Solution

    |

  13. If the distance between the plates of parallel plate capacitor is halv...

    Text Solution

    |

  14. A parallel plate capacitor of capacity C(0) is charged to a potential ...

    Text Solution

    |

  15. A capacitor of capacitance C(0) is charged to a potential V(0) and is ...

    Text Solution

    |

  16. A parallel plate capacitor has an electric field of 10^(5)V//m between...

    Text Solution

    |

  17. The capacitance of a metallic sphere will be 1muF, if its radius is ne...

    Text Solution

    |

  18. Two conducting spheres of radii r(1) and r(2) having charges Q(1) and ...

    Text Solution

    |

  19. A cylindrical capacitor has charge Q and length L. If both the charge ...

    Text Solution

    |

  20. Conducting sphere of radius R(1) is covered by concentric sphere of ra...

    Text Solution

    |