Home
Class 12
PHYSICS
An electric dipole of moment vecp is pla...

An electric dipole of moment `vecp` is placed normal to the lines of force of electric intensity `vecE`, then the work done in deflecting it through an angle of `180^(@)` is

A

`Pe`

B

`+2pE`

C

`-2pE`

D

Zero

Text Solution

Verified by Experts

The correct Answer is:
4
`W_(1 rarr 2) = p E (cos theta_(1) - cos theta_(2)) = p E [ cos 0 - cos 270^(@)]`
`= 0`
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATICS

    CP SINGH|Exercise Exercises|226 Videos

  • ELECTROMAGNETIC WAVES

    CP SINGH|Exercise EXERCISES|21 Videos

  • MAGNETIC FIELD

    CP SINGH|Exercise EXERCISE|77 Videos

Similar Questions

Explore conceptually related problems

An electric dipole of moment p is placed normal to the lines of force of electric field E, then the work done in deflecting it through an angle of 180 degree is

An electric dipole of dipole moment p is placed in a uniform external electric field E. Then, the

An electric dipole of dipole moment vec(P) is placed in a uniform electric field vec(E) such that vecP is perpendicular to vecE The work done to. turn the dipole through an angle of 180^@ is

An electric dipole of moment vec(P) is lying along a uniform electric field vec(E ) . The work done in rotating the dipole by 90^(@) is:

An electric dipole of moment vecp is placed in a uniform electric field vecE , with vecp parallel to vecE . It is then rotated by an angle theta . The work done is

A dipole of moment vecp is placed in a uniform electric field vecE . The force on the dipole is vecF and the torque is vec(tau)

The work done in deflecting a dipole through 180^(@) from field direction is

An electric dipole of moment p is placed in the positive of stable equilibrium in uniform electric field of intensity E . It is rotated through an angle theta from the initial position. The potential energy of electric dipole in the final position is

CP SINGH-ELECTROSTATICS-Exercises
  1. An electric dipole moment p is placed in an electric field of intensit...

    Text Solution

    |

  2. An electric dipole is put in north-south direction in sphere filled wi...

    Text Solution

    |

  3. An electric dipole of moment vecp is placed normal to the lines of for...

    Text Solution

    |

  4. An electric dipole has the magnitude of its charge as q and its dipole...

    Text Solution

    |

  5. Two short dipoles , each of dipole moment P are placed at a large sepa...

    Text Solution

    |

  6. The electric field at the origin is along the positive x-axis. A small...

    Text Solution

    |

  7. Which of the following is correct regarding equipotential surface ?

    Text Solution

    |

  8. In the following figure, equipotential lines are shown

    Text Solution

    |

  9. Some equipotential surfaces are shown in figure . The magnitude and ...

    Text Solution

    |

  10. In the following graph , the magnitude of maximum electric field is

    Text Solution

    |

  11. The electric field and the electric potential at a point are E and V r...

    Text Solution

    |

  12. In a uniform electric field ,

    Text Solution

    |

  13. In a uniform electric field , equipotential surface must (i) be plan...

    Text Solution

    |

  14. The electric potential V at any point x, y, z (all in meters) in space...

    Text Solution

    |

  15. The electirc potential at a point (x, y, z) is given by V = -x^(2)y ...

    Text Solution

    |

  16. An electric field E = (20hati + 30 hatj) N/C exists in the space. If t...

    Text Solution

    |

  17. Electric potential is given by V = 6x - 8xy^(2) - 8y + 6yz - 4z^(2) ...

    Text Solution

    |

  18. Two points are at distance a and b (a lt b) from a long string of char...

    Text Solution

    |

  19. The electric potetnial in a region along x-axis varies with x accordin...

    Text Solution

    |

  20. A non-conducting ring of radius 0.5 m carries a total charge of 1.11xx...

    Text Solution

    |