An electric dipole consists of two opposite charges each of magnitude 1.0 x ${{10}^{-6}}$ C separated by 2 cm. The dipole is placed in an external uniform field of 1 x 105 N/C. Find (i) the maximum torque exerted by the field on the dipole (ii) the work which an external agent will have to do in turning the dipole through 180° starting from the position, 0 = 0°.
