Home
Class 11
PHYSICS
The surface charge density of a thin cha...

The surface charge density of a thin charged disc of radius R is `sigma`. The value of the electric field at the centre of the disc is `(sigma)/(2in_(o))`. With respect to the field at the centre, the electric field along the axis at a distance R from the centre of the disc reduces by

A

`70.7% `

B

`29.3%`

C

`9.7%`

D

`14.6% `

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • DUAL NATURE OF MATTER AND RADIATION

    DISHA|Exercise PHYSICS|45 Videos

  • ELECTROMAGNETIC INDUCTION

    DISHA|Exercise PHYSICS|45 Videos

Similar Questions

Explore conceptually related problems

Charges q is uniformly distributed over a thin half ring of radius R . The electric field at the centre of the ring is

At which distance along the centre axis of a uniformaly charged plastic disc of radius R is the magnitude of the electric field equal to one-half the magnitude of the field at the centre of the surface of the disc ?

A conducting sphere of radius R is given a charge Q . The electric potential and the electric field at the centre of the sphere respectively are

The electric field at a distance (3R)/2 from the centre of a charged conducting spherical shell of radius R is E. The electric field at a distance R/2 from the centre of the sphere is :

The electric field at a distance 3R//2 from the centre of a charge conducting spherical shell of radius R is E . The electric field at a distance R//2 from the centre of the sphere is

DISHA-ELECTRIC CHARGE AND FIELDS-Physics
  1. The surface charge density of a thin charged disc of radius R is sigma...

    Text Solution

    |

  2. A solid conducting sphere of radius a has a net positive charge 2Q. A ...

    Text Solution

    |

  3. Two equally charged, indentical metal spheres A and B repel each other...

    Text Solution

    |

  4. In the figure, the net electric flux through the area A is phi=vecE.ve...

    Text Solution

    |

  5. ABC is an equilateral triangle. Charges +q are placed at each corner. ...

    Text Solution

    |

  6. An electric dipole is placed in a uniform electric field. The dipole w...

    Text Solution

    |

  7. An uniform electric field E exists along positive x-axis. The work don...

    Text Solution

    |

  8. Which one of the following graphs represents the variation of electric...

    Text Solution

    |

  9. A hollow cylinder has a charge qC within it. If phi is the electric fl...

    Text Solution

    |

  10. If E(a) be the electric field strength of a short dipole at a point on...

    Text Solution

    |

  11. Three poistive charges of equal value q are placed at the vertices of ...

    Text Solution

    |

  12. Three point charges Q(1), Q(2), Q(3) in the order are placed equally...

    Text Solution

    |

  13. Electric charge is uniformly distributed along a along straight wire o...

    Text Solution

    |

  14. A small sphere carrying a charge q is hanging in between two parallel ...

    Text Solution

    |

  15. An electric dipole consisting of two opposite charges of 2xx10^(-6)C e...

    Text Solution

    |

  16. The electric field in a certain region is acting radially outwards and...

    Text Solution

    |

  17. The spatial distribution of the electric field due to charges (A,B) is...

    Text Solution

    |

  18. Point charges +4q, -q are kept on the x-axis at points x=0,x=a and X=2...

    Text Solution

    |

  19. The figure shows some of the electric field lines corresponding to an ...

    Text Solution

    |

  20. For distance far away from centre of dipole the change in magnitude of...

    Text Solution

    |