The Total solution for NCERT class 6-12
An electric dipole with dipolemoment 4 × 10−9 C m is aligned at 30° with the direction of auniform electric field of magnitude 5 × 104 N C−1.Calculate the magnitude of the torque acting on the dipole.
Electric dipole moment, p =4 × 10−9 C m
Angle made by p witha uniform electric field, θ = 30°
Electric field, E =5 × 104 N C−1
Torque acting on the dipole isgiven by the relation,
Therefore, the magnitude of thetorque acting on the dipole is 10−4 N m.