試題詳解

14. There is an electric dipole in an electric field, as shown below. Which of the following statement is incorrect?
(A) The dipole rotates clockwise.
(B) The torque on +q points up.
(C) The electric dipole moment is proportional to the distance from –q to +q.
(D) The dipole has a max potential energy when it is perpendicular to E.
(E) The electric dipole moment points from –q to +q.