Home
Class 12
PHYSICS
The energy density of a medium of dielec...

The energy density of a medium of dielectric constant k surrounding the charged conductor is

A

`(sigma^(2))/(2in_(0)k)`

B

`1/2in_(0)kE^(2)`

C

`sigma/(in_(0)k)`

D

both 'a' and 'b'

Text Solution

Verified by Experts

The correct Answer is:
D
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

Calculate the energy per unit volume of a medium of dielectric constant 3, if the intensity of the electric field is 100V//m .

For metals the value of dielectric constant (K) is

Assertion (A): Capacity of a conductor is independent on the amount of charge on it. Reason (R ): Capacitance depends on the dielectric constant of surrounding medium, shape and size of the conductor.

Induced surface density of a medium with dielectric is represented as

A charged of 8xx10^(-6)C is given to a metallic sphere of radius 5 cm placed in a medium of dielectric constant 5. The surface charge density of sphere is

The dielectric constant k for an insulator cannot be

A conductor having a charge density of 120muC//m^(2) is surrounded by a medium of dielectric constant 4. The electric intensity at a point very near the charged conductor is

If S is the surface area of charged conductor on which the surface density of charge is and K is the dielectric constant of the medium around it, then outward force acting on the surface of the conductor is

NIKITA PUBLICATION-ELECTROSTATICS-Multiple Choice Questions
  1. The energy per unit volume of a dielectric medium is directly proporti...

    Text Solution

    |

  2. The energy density of air medium is 44.25xx10^(-8)J//m^(3). The intens...

    Text Solution

    |

  3. The energy density of a medium of dielectric constant k surrounding th...

    Text Solution

    |

  4. Calculate the energy per unit volume of a medium of dielectric constan...

    Text Solution

    |

  5. The electrostatic energy stored in the 1 litre volume of air when it i...

    Text Solution

    |

  6. A potential difference of 50 V is maintained between the two plates of...

    Text Solution

    |

  7. A cube of marble of each side 5m long is placed in electric field of i...

    Text Solution

    |

  8. A small sphere carries a charge of 20muC. The energy density of electr...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  12. Polar molecules have permanent

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  15. Non polar molecules have donot permanent

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  18. The ratio of polarisation to electric intensity is

    Text Solution

    |

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

    Text Solution

    |

  20. Which of the following is vector ?

    Text Solution

    |