Home
Class 12
PHYSICS
Two identical capacitors, have the same ...

Two identical capacitors, have the same capacitance C. One of them is charged to potential `V_1` and the other `V_2`. The negative ends of the capacitors are connected together. When the poistive ends are also connected, the decrease in energy of the combined system is

A

`(1)/(4)C(V_(1)^(2)-V_(2)^(2))`

B

`(1)/(4)C(V_(1)^(2)+V_(2)^(2))`

C

`(1)/(4)C(V_(1)^(2)-V_(2))^(2)`

D

`(1)/(4)C(V_(1)^(2)+V_(2))^(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATICS

    TARGET PUBLICATION|Exercise EVALUATION TEST|14 Videos
  • ELECTROSTATICS

    TARGET PUBLICATION|Exercise CRITICAL THINKING|67 Videos
  • ELECTROMAGNETIC INDUCTION

    TARGET PUBLICATION|Exercise EVALUATION TEST|8 Videos
  • GRAVITATION

    TARGET PUBLICATION|Exercise EVALUATION TEST|24 Videos

Similar Questions

Explore conceptually related problems

Two capacitors of capacitances 3 mu F & 6 mu F are charged to potential of 2V and 5V respectively.These two charged capacitors are connected in series.Find the potential across C_(1)

Two idential capacitors are joined in parallel, charged to a potential V and then separated and then connected in series i.e. the positive plate of one is connected to negative of the other

Two capacitors of capacitances 3 muF and 6 muF , are charged to potentials 2V and 5V respectively. These two charged capacitors are connected in series. Find the potential across each of the two capacitors now.

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 6 muF is charged to a potential of 150V. Its potential falls to 90V, when another uncharged capacitor is connected to it. Find the capacitance of the second capacitor and the amount of energy lost due to the connection.

Two identical capacitors eachof capacitance C are charged to the same potential V and are connected in two circuits (i) and (ii) at t=0 as shown. The charges on the capacitor at t=CR are

Two capacitors of capacitances 1muF and 3muF are charged to the same voltages 5V. They are connected in parallel with oppositely charged plates connected together. Then

TARGET PUBLICATION-ELECTROSTATICS-COMPETITIVE THINKING
  1. A 2 muF capacitor is charged to 100 V, and then its plates are connect...

    Text Solution

    |

  2. A 40 muF capacitor in a defibrillator is charged to 3000 V. The energy...

    Text Solution

    |

  3. n small drops of the same size of the same size are charged to V volt ...

    Text Solution

    |

  4. If n drops, each of capacitance C and charged to a potential V, coales...

    Text Solution

    |

  5. A parallel plate condenser has a unifrom electric field E (V//m) in th...

    Text Solution

    |

  6. The combined capacity of the parallel combination of two capacitors is...

    Text Solution

    |

  7. A slab of material of dielectric constant K has the same area as the ...

    Text Solution

    |

  8. A capacitance of 2 muF is required in an electrical circuit across a p...

    Text Solution

    |

  9. The electric field due to uniformly charged sphere of radius R as a fu...

    Text Solution

    |

  10. Energy stored in a condenser of capacity 10 uF, charged to 6kV is use...

    Text Solution

    |

  11. A thunder cloud and the earth's surface may be regarded as a pair of c...

    Text Solution

    |

  12. A string is compressed by 2 mm by a force of 8 N and condenser is char...

    Text Solution

    |

  13. Two identical capacitors, have the same capacitance C. One of them is ...

    Text Solution

    |

  14. A sphere of radius R has a charge density sigma. The electric intensit...

    Text Solution

    |

  15. Two capacitors C1 and C2 are charged to 120V and 200V respectively. It...

    Text Solution

    |

  16. The radius of the earth is 6400 km. Its capacitance in microfarad is……...

    Text Solution

    |

  17. The capacity of an isolated sphere of radius 9 cm is C. When it is con...

    Text Solution

    |

  18. Assertion: A parallel plate capacitor is connected across battery thro...

    Text Solution

    |

  19. Assertion: The lightening conductor at the top of high building has sh...

    Text Solution

    |

  20. Putting a dielectric substance between two plates of condenser : capac...

    Text Solution

    |