Question

cal the work done or the energy stored in a electric dipole in bringing it from infinity to an electric field.

Answer 1

Let an electric dipole having charge +q and -q seperated at distance d
now the potential energy of the system is
U_p = kq^​2/d
now the work done in bringning from infinity to a point let origin is
W = change in potential energy of the system
W = - (U_∞ - U_p )
W = ​ - U_∞ + U_p ( U_∞ = 0)
W = -0 + ​ U_p
W = ​ U_p = ​kq^​2/d
hence the potential energy of the system depend upon charge and distance between the charges