An electric dipole of dipole moment p is lying along a uniform electric field E . The work done in rotating the dipole from 60^ to 90^ from the direction of electric field, is

Step-by-step solution

Given, ₁=60^ , ₂=90^ Work done in rotating a dipole from ₁ to ₂ in electric field is given as aligned W & =p E ( ₁- ₂ ) & =p E ( 60^ - 90^ ) & =p E ( 1 2 -0 )= p E 2 aligned