Question

An electric dipole with dipole moment 4* 10-° Cm is aligned at 30° degree with the direction of a uniform electric field of magnitude 5 * 10° N/C. Calculate the magnitude of torque acting on the dipole





answers please​

Answer 1

Explanation:

Electric dipole moment, E=4×10

−9

N/C

Angle made by p with a uniform electric field, θ = 30°

Electric field, E=5×10

4

N/C

Torque acting on the dipole:

τ=pEsinθ

=4×10

−9

×5×10

4

×sin30

o

=20×10

−5

×

2

1

=10

−4

Nm

Hence, the magnitude of the torque acting on the dipole is 10

−4

N m.