Question

an electric dipole is placed in a uniform electric field e with its dipole moment p parallel to the field. find(i) the work done in turning the dipole till its dipole moment points in the direction opposite to e.(ii) the orientation of the dipole for which the torque acting on it becomes maximum.

Answer 1

The elector magnetic will be placed in uniform electric field E

And dipole moment p

(i) the work is done in turning the dipole till its dipole moment points

We have             W=∫θ₁ θ₂τdθ

                               W= ∫πθ pEsinθdθ

                               W=  pE [ -cosθ]πθ

                                W = -2pE

                                 τ = pEsinθ

(ii) the orientation  to the dipole for which the torque acting

For θ = π/2,  τ is maximum

Answer 2

Answer:

here is the answer to the question.