Home
Class 12
PHYSICS
The surface density of charge on a condu...

The surface density of charge on a conductor situated in air, is `2xx10^(-4)C//m^(2)`. The electric intensity at a point very near to its surface is

A

`2.259xx10^(7)N//C`

B

`2.261xx10^(9)N//C`

C

`3.321xx10^(7)N//C`

D

`3.321xx10^(9)N//C`

Text Solution

Verified by Experts

The correct Answer is:
A
`E=sigma/(in_(0)k)=(2xx10^(-4))/(8.85xx10^(-12)xx1)`
`= 2.259xx10^(7)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

A plane conductor with very large dimensions is charged such that surface charge density is 1.6xx10^(-2)C//m^(2) . The electric field intensity at a point near it if the conductor is in a medium of dielectric constant 5 is

The charge density on the surface of a conducting sphere is 64xx10^(-7)C//m^(2) and the electric intensity at a distance of 2 m from the centre of the sphere is 4pixx10^(4)N//C . The radius of the sphere is

The surface charge density of a conducting sphere is 8.85xx10^(-10)C//m^(2) and the electric field intensity at a distance of 4m from the centre of the sphere is 10^(-2)V//m . The radius of the sphere, assuming the sphere to be in vacuum is

If sigma is surface density of charge on the charged cylinder of radius R, then electric intensity E at outer point at a distance r from its axis is

The surface density of charge on the surface of a charged conductor in the air is 26.5 muCm^(-2) . The the outward force per unit area of the charged conductor is (epsilon_0=8.85xx10^-12C^2N^-1m^-2)

A charged cylinder of radius 2 cm has surface density of charge 8.85xx10^(-9)C//m^(2) . It is placed in a medium of dielectric constant 5. The electric intensity at a point at a distance of 4 m from its axis is

The electric field at the surface of a charged spherical conductor is 10 kV/m. The electric field at an outward radial distance equal to the radius from its surface will be

A metal sphere of radius 5 cm is charged to 100 V. Electric intensity at a point on its surface is

The electric intensity at a point near a charged conductor of surface charge density sigma is

Assertion: The surface charge densities of two spherical conductors of different radii are equal. Then the electric field intensities near their surface are also equal. Reason: Surface charge density is equal to charge per unit area.

NIKITA PUBLICATION-ELECTROSTATICS-Multiple Choice Questions
  1. A metal cylinder of length 2 km is charged with 2xx10^(-2)C. The linea...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  12. The mechanical stress of a charged conductor of charge density sigma i...

    Text Solution

    |

  13. A metal sphere of radius 10 cm is given a charge of 12muC. The force a...

    Text Solution

    |

  14. Inside a hollow charged spherical conductor, the potential

    Text Solution

    |

  15. The energy per unit volume of a dielectric medium is directly proporti...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |