Question

An electric dipole of moment vec(P) is lying along a uniform electric field vec(E ). The work done in rotating the dipole by 90^(@) is:

Answer 1

Answer:

Zero. Since work done is p.e that is pecosthetha and costhetha in this case is zero.

Answer 2

Answer:

Explanation:

Work done in rotating a dipole=PE( 1-cosθ)

If θ=90°, work done=PE(1-0)=PE