An electric dipole with dipole moment 4 x 10 power -9 Cm is aligned at 30 degree with the direction of a uniform electric field of magnitude 5 x 10 power 4 NC inverse -1. Calculate the magnitude of the torque acting on the dipole. | question and answer !



Question :-

An electric dipole with dipole moment 4 x 10 power -9 Cm is aligned at 30 degree with the direction of a uniform electric field of magnitude 5 x 10 power 4 NC inverse -1. Calculate the magnitude of the torque acting on the dipole.

Answer :-

Electric dipole moment, p= 4 x 10 power -9 Cm

Angle made by p with a uniform electric field,

Electric field, E = 5 x 10 power4 NC power -1

Torque acting on the dipole is given by the relation,



Therefore, the magnitude of the torque acting on the dipole is 10 power -4 Nm.

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