Home
Class 12
PHYSICS
If the dielectric constant and dielectir...

If the dielectric constant and dielectirc strength be denoted by `K` and `x` respectively, then a meterial suitable for use as a dielectric in a capacitor must have

A

high K and high X

B

high K and low X

C

low K and high X

D

low K and low X

Text Solution

Verified by Experts

The correct Answer is:
A
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

Why metals cannot be used as a dielectric in a capacitor?

The dielectric constant k for an insulator cannot be

Which of the following set of characteristics of a material is suitable for using it as a dielectric in a capacitor?

A parallel plate capacitor is to be designed with a voltage rating 1 KV using a material of dielectrical constant 3 and dielectric strength about 10^(7) Vm^(-1) . [Dielectric strength is the maximum electric field a material can tolerate without break down, i.e, without starting to conduct electrically through partial ionisation. For safety, we should like the field never to exceed say 10% of the dielectric strength]. What minimum area of the plates is required to have a capacitance of 50 pF ?

For metals the value of dielectric constant (K) is

The space between parallel plate capacitors is filled with four dielectrics of equal dimensions but of dielectric constants K_(1), K_(2), K_(3)andK_(4) respectively. If K is the dielectric constant of a single dielectric that must be filled between capacitor plates to have the same capacitance between A and B. Then we must have

A capacitor between whose plates there is a dielectric with a dielectric constant e is connected to a DC source. How will the energy stored in the capacitor change if the dielectric is removed? Explain the cause of this change.

In an isolted, charged, parllel-plate air capacitor, the charge per unit area on each plate has a magnitude of sigma . A dielectric slab having the dielectric constant K is now introduced between the plates. The induced charge per unit area on the surface of the dielectric will have magnitude.

NIKITA PUBLICATION-ELECTROSTATICS-Multiple Choice Questions
  1. A small sphere carries a charge of 20muC. The energy density of electr...

    Text Solution

    |

  2. Due to polarisation the electric field inside a dielectric is

    Text Solution

    |

  3. If the dielectric constant and dielectirc strength be denoted by K and...

    Text Solution

    |

  4. A molecule in which centre of gravity of positive nuclei and revolving...

    Text Solution

    |

  5. Polar molecules have permanent

    Text Solution

    |

  6. Which of the following is example of polar molecule ?

    Text Solution

    |

  7. A molecule in which centre of gravity of positive nuclei and revolving...

    Text Solution

    |

  8. Non polar molecules have donot permanent

    Text Solution

    |

  9. Which of the following is example of non polar molecule ?

    Text Solution

    |

  10. The electric dipole moment per unit volume of electric dipole is

    Text Solution

    |

  11. The ratio of polarisation to electric intensity is

    Text Solution

    |

  12. The amount of induced surface charge per unit area of the surface is

    Text Solution

    |

  13. Which of the following is vector ?

    Text Solution

    |

  14. A conductor is said to have a capacity of one farad, when a ………. Raise...

    Text Solution

    |

  15. An arrangement which increases charge storing capacity without an appr...

    Text Solution

    |

  16. Unit of capacitance is

    Text Solution

    |

  17. Which of the following represents the dimensions of Farad

    Text Solution

    |

  18. The relation between electric charge, electric potential and capacity ...

    Text Solution

    |

  19. The capacity of a parallel plate condenser is given by

    Text Solution

    |

  20. The capacity of a parallel plate condenser is inversely proportional t...

    Text Solution

    |