Home
Class 12
PHYSICS
A dipole of moment vecp is placed in a u...

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)`

A

(i), (ii) and (iii) are correct

B

(i) and (ii) are correct and (ii) is wrong

C

only (i) is correct

D

(i) and (ii) are correct and (iii) is wrong

Text Solution

Verified by Experts

The correct Answer is:
B
In a uniform electric field `vecE`, dipole experiences a torque `vec tau` given by `vec tau = vecp xx vecE` but expreiences no forces. The potenial energy of the dipole in a uniform electric field ` vecE` is `U = - vecp .vecE` .
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    NCERT FINGERTIPS|Exercise Electrostatics Of Conductors|5 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    NCERT FINGERTIPS|Exercise Dielectrics And Polarisation|4 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    NCERT FINGERTIPS|Exercise Potential Energy As A System Of Charges|4 Videos

  • ELECTROMAGNETIC WAVES

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • MAGNETISM AND MATTER

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

A dipole of dipole moment vec(P) is placed in uniform electric field vec(E) , then torque acting on it is given by

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

An electric dipole of dipole miment vec(p) is placed in a uniform electric field vec(E ) . Write the expression for the torque vec tau experienced by the dopole. Identify two pairs of perpendicular vectors in the expression. Show diagrammatically the orientation of hte dipole in the field for which the torque is (i) maximum and (ii) half the minimum value, and (iii) zero.

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

An electric dipole of moment vecp placed in a uniform electric field vecE has minimum potential energy when the angle between vecp and vecE is

An electric dipole is placed in a uniform electric field. The dipole will experience

When an electric dipole P vecv is placed in a uniform electric field vecE then at what angle between vecP and vecE the value of torque will be maxima