Home
Class 12
PHYSICS
There is a capacitor with capacitance C,...

There is a capacitor with capacitance C, charged up to a potential difference of V. It is disconnected from the battery then both plates are connected to each other by a metal wire. How much heat will be dissipated?

Text Solution

Verified by Experts

When both the plates are connected to each other, all the charge on them will be neutralised so, the total energy stored in a capacitor must dissipate in the form of heat. Heat generated must be `(1)/(2)CV^(2)`.
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    MODERN PUBLICATION|Exercise Tough & Tricky PROBLEMS|10 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    MODERN PUBLICATION|Exercise NCERT FILE Solved (Textbook Exercise)|11 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    MODERN PUBLICATION|Exercise PRACTICE PROBLEMS 5|18 Videos

  • ELECTROMAGNETIC WAVES

    MODERN PUBLICATION|Exercise CHAPTER PRACTICE TEST|14 Videos

  • MAGNETISM AND MATTER

    MODERN PUBLICATION|Exercise CHAPTER PRACTICE TEST FOR BOARD EXAMINATION|16 Videos

Similar Questions

Explore conceptually related problems

There is an air capacitor with capacitance C, charged to a potential difference of V. If the capacitor is isolated from the battery after charging, and then a dielectric slab is inserted in between the plates of capacitor. How will the energy stored in this capacitor change?

A capacitor C is charged to a potential difference V and battery is disconnected. Now if the capacitor plates are brough close slowely by some distance:

A capacitor C is charged to a potential V by a battery. It is then disconnected from the battery and again connected with its polarity reversed to the battery

A parallel plate capacitor 'A' of capacitance 1 muF is charged to a potential drop 100 volt and then disconnected form the battery. Now the capacitor 'A' is completely filled with a dielectric slap of dielectric constant k = 4 . Another parallel plate capacitor 'B' of capacitance 2 muF is charged to a potential drop 20 volt and then disconnected from the battery. Now the two capacitors 'A' and 'B' are connected with each other with opposite polarities. Then the heat dissipated after connecting the capacitors is

A parallel plate capacitor of capacitance C is connected to a battery and is charged to a potential difference V. Another capacitor of capacitance 2C is ismilarly charged to a potential difference 2V. The charging battery is now disconnected and the capacitors are connected in parallel to each other in such a way that the poistive terminal of one is connected to the negative terminal of the other. The final energy of the configuration is

A capacitor of capacitance C_(1) is charged to a potential V_(1) while another capacitor of capacitance C_(2) is charged to a potential difference V_(2) . The capacitors are now disconnected from their respective charging batteries and connected in parallel to each other . (a) Find the total energy stored in the two capacitors before they are connected. (b) Find the total energy stored in the parallel combination of the two capacitors. (c ) Explain the reason for the difference of energy in parallel combination in comparison to the total energy before they are connected.

MODERN PUBLICATION-ELECTROSTATIC POTENTIAL AND CAPACITANCE -Conceptual Questions
  1. How is an electric circuit shielded from stray electric field by placi...

    Text Solution

    |

  2. A large potential difference is produced between your body and floor w...

    Text Solution

    |

  3. Why is it difficult to make one point charge?

    Text Solution

    |

  4. There is an air capacitor with capacitance C, charged to a potential d...

    Text Solution

    |

  5. Separation between the plates of a capacitor is increased from d to 2...

    Text Solution

    |

  6. In a parallel plate capacitor, the region between the plates is fille...

    Text Solution

    |

  7. Show that the magnitude of the polarisation of dielectric medium is eq...

    Text Solution

    |

  8. Assertion: The tyres of aircraft's are slightly conducting. Reason: ...

    Text Solution

    |

  9. How do we safeguard buildings from electric lightning?

    Text Solution

    |

  10. What puts the limit on maximum magnitude of charge stored in a capacit...

    Text Solution

    |

  11. Prove that in charging a capacitor half of the energy supplied by the ...

    Text Solution

    |

  12. There is a capacitor with capacitance C, charged up to a potential dif...

    Text Solution

    |

  13. A capacitor of capacity C charged to potential "V" and " then connec...

    Text Solution

    |

  14. If electric field vec(E) is zero at a particular point then potential ...

    Text Solution

    |

  15. Where is energy stored in a capacitor?

    Text Solution

    |

  16. The force between the plates of a parrallel plate air capacitor , if c...

    Text Solution

    |

  17. Find the stored energy in a capacitor using force between the plates.

    Text Solution

    |

  18. Suppose there are two points A and B that are having equal potential V...

    Text Solution

    |

  19. A high tension wire of several thousand volts falls on a car. What hap...

    Text Solution

    |

  20. What are the deciding factors for the maximum potential to which a don...

    Text Solution

    |