Home
Class 12
PHYSICS
A long thin flat sheet has a uniform sur...

A long thin flat sheet has a uniform surface charge density `sigma`. The magnitude of the electric field at a distance .r. from it is given by

A

`sigma//epsi_(0)`

B

`sigma//2epsi_(0)`

C

`sigma//epsi_(0)r`

D

`sigma//2epsi_(0)r`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ELECTRIC CHARGES AND FIELDS

    AAKASH SERIES|Exercise Exercise-II|56 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    AAKASH SERIES|Exercise PRACTICE EXERCISEX|42 Videos

  • ELECTRIC FIELD AND POTENTIAL

    AAKASH SERIES|Exercise PROBLEMS (LEVEL-II)|26 Videos

Similar Questions

Explore conceptually related problems

Consider a thin spherical shell of radius R consisting of uniform surface charge density sigma . The electric field at a point of distance x from its centre and outside the shell is

A non-conducting semi circular disc (as shown in figure) has a uniform surface charge density sigma . The ratio of electric field to electric potential at the centre of the disc will be

Figure shows equipotential surfaces concentric at O the magnitude of electric field at a distance r measured from O is

There are three concentric thin spheres of radius a,b,c (agtbgtc) . The total surface charge densities on their surfaces are sigma,-sigma,sigma respectively. The magnitude of the electric field at r (distance from centre) such that agtrgtb is:

(a) Use Gauss's theorem to find the electric field due to a uniformly charged infinitely Iarge plane thin sheet with surface charge density. Sigma (b) An infinitely large thin plane sheet has a uniform surface charge density + sigma . Obtain the expression for the amount of work done in bringing a point charge q from infinity to a point , distant r, in front of the charged plane sheet.

An infinity long cylinder of radius R has an infinitely long cylindrical cavity of radius (R)/(2) are shown in the figure. The remaining portion has uniform volume charge density rho . The magnitude of electrical field at the centre of the cavity is-

There are three concentric thin spheres of radius a,b,c (agtbgtc) . The total surface charge densities on their surfaces are sigma,-sigma,sigma respectively. The magnitude of the electric field at r (distance from centre) such that agtrgtb is: A. 0 B. (sigma)/(epsilon_(0) r^(2))(b^(2)-c^(2)) C. (sigma)/(epsilon_(0)r)(a^(2)+b^(2)) D. none of these

An infinitely long thin straight wire has uniform linear charge density of 1/4 coul m^(-1) . Then the magnitude of the electric intensity at a point 18 cm away is

A insulating cylindrical rod of diameter d and length l(l gt gt d) has a uniform surface charge density such that the electric field just outside the curved surface of the cylinder at point M is E_(0) . Find the electric field due to charge distribuition at point P (r gt gt l) .

A sphere of radius R carries charge such that its volume charge density is proportional to the square of the distance from the centre. What is the ratio of the magnitude of the electric field at a distance 2 R from the centre to the magnitude of the electric field at a distance of R//2 from the centre?

AAKASH SERIES-ELECTRIC CHARGES AND FIELDS-Practice Exercise
  1. An electric, dipole consisting of two opposite charges of 2 xx 10^(-6)...

    Text Solution

    |

  2. A molecule with a dipole moment p is placed in an electric field of st...

    Text Solution

    |

  3. An electric dipole of dipole moment p is placed in the position of sta...

    Text Solution

    |

  4. For dipole q=2 xx 10^(-6) C and d = 0.01 m, calculate the maximum torq...

    Text Solution

    |

  5. An electric dipole of moment p is placed normal to the lines of force ...

    Text Solution

    |

  6. A dipole consisting of +10 nC and -10 nC separated by a distance of 2c...

    Text Solution

    |

  7. The number of electric lines of force originating from a charge of 1C ...

    Text Solution

    |

  8. A cube of side 1 is placed in a uniform field E, where E= E hat(i). Th...

    Text Solution

    |

  9. A point charge +q is placed at the centre of a cube of side l. The ele...

    Text Solution

    |

  10. A long thin flat sheet has a uniform surface charge density sigma. The...

    Text Solution

    |

  11. A charge of 8.85C is placed at the centre of a spherical Guassian surf...

    Text Solution

    |

  12. The inward and outward electric flux for a closed surface in units of ...

    Text Solution

    |

  13. If a charge q is placed at the centre of a hemispherical body as shown...

    Text Solution

    |

  14. Total electric flux coming out of a unit positive charge put in air is

    Text Solution

    |

  15. Two square plates are at potential difference of 100V separated by 2cm...

    Text Solution

    |

  16. Find the flux due to the electric field through the curved surface (R ...

    Text Solution

    |

  17. The length of each side of a cubical closed surface is L metre. If cha...

    Text Solution

    |

  18. A Charge Q is distributed uniformly on a ring of radius r. A sphere of...

    Text Solution

    |

  19. A cube is arranged such that its length, breadth and height are along ...

    Text Solution

    |

  20. A metallic ring is connected to a rod oscillates freely like a pendulu...

    Text Solution

    |