Home
Class 12
PHYSICS
A parallel plate capacitor carries a har...

A parallel plate capacitor carries a harge Q. If a dielectric slab with dielectric constant K=2 is dipped between the plates, then

A

the stored energy remains unchanged.

B

the stored energy is increased by a factor of 2.

C

the stored energy is reduced to half its previous value.

D

none of the above is correct.

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATICS

    TARGET PUBLICATION|Exercise COMPETITIVE THINKING|124 Videos

  • ELECTROSTATICS

    TARGET PUBLICATION|Exercise EVALUATION TEST|14 Videos

  • ELECTROSTATICS

    TARGET PUBLICATION|Exercise EVALUATION TEST|14 Videos

  • ELECTROMAGNETIC INDUCTION

    TARGET PUBLICATION|Exercise EVALUATION TEST|8 Videos

  • GRAVITATION

    TARGET PUBLICATION|Exercise EVALUATION TEST|24 Videos

Similar Questions

Explore conceptually related problems

A parallel plate capacitor with a dielectric slab with dielectric constant k= 3 filling the space between the plates is charged to potential V and isolated. Then the dielectric slab is drawn out and another dielectric slab of equal thickness but dielectric constant k'= 2 is introduced between the plates. The ratio of the energy stored in the capacitor later to that initially is:

The potential enery of a charged parallel plate capacitor is U_(0) . If a slab of dielectric constant K is inserted between the plates, then the new potential energy will be

A parallel plate capacitor has a capacitance of 2 mu F . A slab of dielectric constant 5 is inserted between the plates and the capacitor is charged to 100 V and then isolated . (a) What is the new potential diff., if the dielectric slab is removed ? (b) How much work is required to remove teh dielectric slab ?

The separation between the plates of a parallel plate capacitor is d and the area of each plate is A. iff a dielectric slab of thickness x and dielectric constant K is introduced between the plates, then the capacitance will be

A parallel plate capacitor has a capacity c. If a medium of dielectric constant K is introduced between plates, the capacity of capacitor becomes

A parallel plate capacitor having capacitance C farad is connected with a battery of emf V volts. Keeping the capacitor cannected with the battery, a dielectric slab of dielectric constant K is inserted between the plates. The dimensions of the slab are such that it fills the space between the capacitor plates. Then,

Find an expression for the capacitance of a parallel plate capacitor when a dielectric slab of dielectric constant K and thickness t=(d)/(2) but the same area on the plates is inserted between the the capacitors plate. (d=separation between the plates)

A parallel plate capacitor has a dielectric slab of dielectric constant K between its plates that covers 1//3 of the area of its plates, as shown in the figure. The total capacitance of the capacitor is C while that of the portion with dielectric in between is C_1 . When the capacitor is charged, the plate area covered by the dielectric gets charge Q_1 and the rest of the area gets charge Q_2 . The electric field in the dielectric is E_1 and that in the other portion is E_2 . Choose the correct option/options, ignoring edge effects.

Figue shows a parallel plate capacitor with plate area A and plate separation d . A potential difference is being applied between the plates. The battery is then disconnected and a dielectric slab of dieletric constant K is placed in between the plates of the capacitor as shown. The electric field in the dielectric slab is

TARGET PUBLICATION-ELECTROSTATICS-CRITICAL THINKING
  1. A capacitor of 30 muF charged up to 500 volt is connected in parallel ...

    Text Solution

    |

  2. A 8 muF capacitor is fully charged across a 12V battery, it is then di...

    Text Solution

    |

  3. A condenser of of capacity 2 muF is charged to a potential of 100V. It...

    Text Solution

    |

  4. When two capacitors are connected in series, the equivalent capacitanc...

    Text Solution

    |

  5. Six identical capacitors, each of 1muF are joined in parallel and the ...

    Text Solution

    |

  6. Three capacitors of capacitanes C(1), C(2) and C(3) are connected (i)...

    Text Solution

    |

  7. Two capacitors of capacitance 2 muF and 3 muF are joined in series. Ou...

    Text Solution

    |

  8. When three identical capacitors are connected in series, their equival...

    Text Solution

    |

  9. In van de Graaff generator, the process of spraying the charge is call...

    Text Solution

    |

  10. Artificial transmutation is the process in which

    Text Solution

    |

  11. A parallel plate capacitor carries a harge Q. If a dielectric slab wit...

    Text Solution

    |

  12. A cyclinder of radius 4mm and surface density of charge 0.25 muC//m^(2...

    Text Solution

    |

  13. An infinite line charge produces a field of 9xx10^(4) NC^(-1) at a dis...

    Text Solution

    |

  14. A cylinder of radius R and length L is placed in the uniform electric ...

    Text Solution

    |

  15. The electrostatic energy stored in 1 litre volume of air when it is pl...

    Text Solution

    |

  16. Two parallel metal plates 2.0 cm apart, are connected to a 200 V batte...

    Text Solution

    |

  17. A capacitor 4 muF charged to 50 V is connected to another capacitor of...

    Text Solution

    |

  18. A parallel plate capacitor is connected to a battery. The plates are p...

    Text Solution

    |

  19. What will be the capacity of a parallel-plate capacitor when the half ...

    Text Solution

    |

  20. STATEMENT-1: A parallel plate capacitor is charged by a battery. The b...

    Text Solution

    |