Home
Class 11
PHYSICS
The work in rotating electric dipole of ...

The work in rotating electric dipole of dipole moment p in an electric field E through an angle `theta` from the direction of electric field, is:

A

`pE(1- cos theta)`

B

`pE`

C

zero

D

`-pE cos theta`

Text Solution

Verified by Experts

The correct Answer is:
A

`W=(-pE cos theta)-(-pE)=PE(1- cos theta)`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • MISCELLANEOUS

    ALLEN|Exercise Exersice-03|7 Videos
  • MISCELLANEOUS

    ALLEN|Exercise ASSERTION-REASON|18 Videos
  • MISCELLANEOUS

    ALLEN|Exercise Part -II Example Some worked out Examples|1 Videos
  • KINEMATICS (MOTION ALONG A STRAIGHT LINE AND MOTION IN A PLANE)

    ALLEN|Exercise BEGINNER S BOX-7|8 Videos
  • PHYSICAL WORLD, UNITS AND DIMENSIONS & ERRORS IN MEASUREMENT

    ALLEN|Exercise EXERCISE-IV|8 Videos

Similar Questions

Explore conceptually related problems

Derive an expression for the work done in rotating an electric dipole of dipole moment 'p' in a uniform electric field 'E' from an orientation theta_1" to " theta_2 .

An electric dipole of dipole moment P is lying along uniform electric field E. The work done in rotating the dipole by 37° is

Knowledge Check

  • The torque tau acting on an electric dipole of dipole momtn vec(p) in an electric field vec( E ) is

    A
    `vec(tau)= vec(p).vec(E)`
    B
    `vec(tau)= vec(p)xxvec(E)`
    C
    `vec(tau) = p. vec(E )`
    D
    `vec(tau) = vec(p) E`
  • An electric dipole is placed in an uniform electric field with the dipole axis making an angle theta with the direction of the electric field. The orientation of the dipole for stable equilibrium is

    A
    `(pi)/(6)`
    B
    `(pi)/(3)`
    C
    0
    D
    `(pi)/(2)`
  • In a magnetic dipole of dipole moment M rotated through an angle theta with respect to the direction of the field H, then the work done is :

    A
    `MH sin theta`
    B
    `MH (1-sin theta)`
    C
    `MH cos theta`
    D
    `MH (1-cos theta)`
  • Similar Questions

    Explore conceptually related problems

    Derive an expression for the work done in rotating an electric dipole from its equilibrium position to an angle theta with the uniform electrostatic field.

    In a magnetic dipole of dipole moment M rotated through an angle theta with respect to the direction of the field H, then the work done is :

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

    For an electric dipole potential & electric field

    An electric dipole of dipole moment p is aligned parallel to a uniform electric field E. the energy required to rotate the dipole by 90^(@) is