Home
Class 12
PHYSICS
An isolated conducting sphere of radius ...

An isolated conducting sphere of radius 0.1m placed in vacuum carries a positive charge of `0.1muC`. Find the electric intensity at a point at a distance 0.2 m from the centre of the sphere.

A

`2.25xx10^(2)N//C`

B

`2.25xx10^(4)N//C`

C

`2.52xx10^(2)N//C`

D

`2.52xx10^(4)N//C`

Text Solution

Verified by Experts

The correct Answer is:
B
`E=1/(4piin_(0)k)q/r^(2)=(9xx10^(9)xx10^(-7))/(1xx0.2xx0.2)`
`therefore" "E=2.25xx10^(4)N//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

An isolated conducting sphere of diameter 20 cm placed in air carries a charge of 9muC . The electric intensity at a point at a distance of 10 cm from the surface of the charged sphere is

A sphere of radius R has a charge density sigma . The electric intensity at a point at a distance r from its centre is

A hollow spherical conductor of radius "1m" has a charge of 250 mu C then electric intensity at a point distance of "0.5m" from the centre of the spherical conductor is

A small sphere carries a charge of 20muC . The energy density of electric field at a point 25 cm away from the centre of the sphere in air is

For a uniformly charged non conducting sphere of radius R which of following shows a correct graph between the electric field intensity and the distance from the centre of sphere –

A thin spherical shell of metal has a radius of 0.25 m and carries charge of 0.2 micro coulomb. Calculate the electric intensity at 3.0 m from the centre of the shell.

A hollow insulated conducting sphere of radius 2m, is given a charge of 5 muC . What will be the electric field at the centre of the sphere?

An isolated solid metal sphere of radius R is given an electric charge. The variation of the intensity of the electric field with the distance r from the centre of the sphere is best shown by

There is a cubical cavity inside a conducting sphere of radius R. A positive point charge Q is placed at the centre of the cube and another positive charge q is placed at a distance 1(gtR) from the centre of the sphere. The sphere is earthed Net charge on the outer surface of conducting sphere is

If charge q is induced on outer surface of sphere of radius R, then intensity at a point P at a distance S from its centre is

NIKITA PUBLICATION-ELECTROSTATICS-Multiple Choice Questions
  1. The charge deposited per unit length of cylinder is called as

    Text Solution

    |

  2. The charge density on the surface of a conducting sphere is 64xx10^(-7...

    Text Solution

    |

  3. An isolated conducting sphere of radius 0.1m placed in vacuum carries ...

    Text Solution

    |

  4. A conductor having a charge density of 120muC//m^(2) is surrounded by ...

    Text Solution

    |

  5. A metal sphere of radius 5 cm is charged to 100 V. Electric intensity ...

    Text Solution

    |

  6. The electric intensity at a point distant 1 m from the centre of a sph...

    Text Solution

    |

  7. A charged of 8xx10^(-6)C is given to a metallic sphere of radius 5 cm ...

    Text Solution

    |

  8. A charge of 5xx10^(-10)C is given to a metal cylinder of length 10 cm,...

    Text Solution

    |

  9. The electric intensity due to a charged conducting cylinder of radius ...

    Text Solution

    |

  10. A metal cylinder of length 2 km is charged with 2xx10^(-2)C. The linea...

    Text Solution

    |

  11. A charged cylinder of radius 2 cm has surface density of charge 8.85xx...

    Text Solution

    |

  12. The surface density of charge on a conductor situated in air, is 2xx10...

    Text Solution

    |

  13. An electric cable of diameter 10 cm runs under water for a distance of...

    Text Solution

    |

  14. A circular metal plate of radius 10 cm is given a charge of 20muC on i...

    Text Solution

    |

  15. The surface density of charge on the earth's surface is 2.65xx10^(-9)C...

    Text Solution

    |

  16. The mechanical force acting on a unit area of a charged conductor is

    Text Solution

    |

  17. The mechanical stress of a charged conductor is directly proportional ...

    Text Solution

    |

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

    Text Solution

    |

  19. In an electron gun, the electrons are accelerated by the potential V. ...

    Text Solution

    |

  20. A charged conductor of area ds is placed in electric field of strength...

    Text Solution

    |