Home
Class 12
PHYSICS
A parallel plate capacitor of 6 mu F...

A parallel plate capacitor of 6 `mu F ` is connected across 18 V battery and charged. The battery is k = 2.1 is introduced between the plates. What will be the charge on capacitor ?

A

`50muC`

B

`108muC`

C

`60muC`

D

`85muC`

Text Solution

Verified by Experts

The correct Answer is:
B
`C=6muF,V=18V,k=2.1,Q=?`
`Q=C_(m)*V=C_("air")kV`
`=6xx10^(-6)xx2.1xx18=108xx10^(-6)C`
Promotional Banner

Topper's Solved these Questions

  • ELECTRONS AND PHOTONS

    NIKITA PUBLICATION|Exercise MCQs|162 Videos

  • GRAVITATION

    NIKITA PUBLICATION|Exercise Multiple Choice Questions|409 Videos

Similar Questions

Explore conceptually related problems

A parallel plate capacitor is connected across a battery. Now, keeping the battery connected, a dielectric slab is inserted between the plates. In the process,

Assertion: A parallel plate capacitor is connected across battery through a key. A dielectric slab of constant K is introduced between the plates. The energy which is stored becomes K times. Reason: The surface density of charge on the plate remains constant or uncharged

A parallel plate capacitor of capacity 5 mu F and plate separation 6 cm is connected to a 1V battery and is charged. A dielectric of dielectric constant 4 and thickness 4 cm is introduced into the capacitor. The additional charge that flows into the capacitor from the battery is.

Assertion : A parallel plate capacitor is connected across battery through a key. A dielectric slab dielectric constant K is introduced between the plates. The energy which is stored becomes K times. Reason : The surface density of charge on the plate remains constant or uncharged.

A parallel plate condenser is charged by connected it to a battery. The battery is disconnected and a glass slab is introduced between the plates. Then

Two parallel plate capacitors of capacitances C and 2C are connected in parallel and charged to a potential difference V. The battery is then disconnected and the region between the plates of the capacitor C is completely filled with a material of dielectric constant K. The potential differences across the capacitors now becomes...........

STATEMENT-1: A parallel plate capacitor is charged by a battery of voltage V . The battery is then disconnected. If the space between the plates is filled with a dielectric, the enegry stroed in the capacitor will decrease STATEMENT-2: The capacitance of a capacitor increases due to the introduciton of a dielectric between the plates.

A parallel plate capacitor of capacitance 10 muF is connected across a battery of emf 5 mV. Now, the space between the plates of the capacitors is filled with a deielectric material of dielectric constant K=5. Then, the charge that will flow through the battery till equilibrium is reached is

NIKITA PUBLICATION-ELECTROSTATICS-Multiple Choice Questions
  1. What is T.N.E.I. through the surface A and B respectively ?

    Text Solution

    |

  2. The number of tubes of force through a charge 'q' is

    Text Solution

    |

  3. A parallel plate capacitor of 6 mu F is connected across 18 V ...

    Text Solution

    |

  4. Four capacitors are connected as shown in figure. The equivalent capac...

    Text Solution

    |

  5. Ampere second is a unit of

    Text Solution

    |

  6. The capacity of a parallel plate condenser is 12muF. Its capacity, whe...

    Text Solution

    |

  7. A metal surface of area 1 m^(2) is charged with sqrt(8.85)muC in air. ...

    Text Solution

    |

  8. If a 4muF capacitor is charged to 1 kV, then energy stored in the capa...

    Text Solution

    |

  9. How do you arrange four equal capacitor of 4muF to get effective capac...

    Text Solution

    |

  10. Cyclinder is charged by 10mC. Length of cyclinder is 1km and radius is...

    Text Solution

    |

  11. If charge q is induced on outer surface of sphere of radius R, then in...

    Text Solution

    |

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

    Text Solution

    |

  13. In a parallel plate capacitor with air, the distance between the plate...

    Text Solution

    |

  14. Unit of electric flux is

    Text Solution

    |

  15. Consider a sphere of radius R and cylinder of length L. If both have s...

    Text Solution

    |

  16. If 4 xx 10^(20)eV energy is required to move a charge of 0.25 coulomb ...

    Text Solution

    |

  17. A parallel plate capacitor has a capacity c. If a medium of dielectric...

    Text Solution

    |

  18. Two capacitors of capacities 1muF and 4muF are connected in series wit...

    Text Solution

    |

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

    Text Solution

    |

  20. Three charges +5C, +7C and -4C are situated within a closed surface an...

    Text Solution

    |