A dipole consists of two opposite charges (q and q) separated by a fixed distance d. The

A dipole consists of two opposite charges (q and ˆ’q) separated by a fixed distance d. The dipole is placed in an electric field in the + x -direction of magnitude E. The dipole axis makes an angle q with the electric field as shown in the diagram.
(a) Calculate the net electric force acting on the dipole.
(b) Calculate the net torque acting on the dipole due to the electric forces as a function of θ. Let counterclockwise torque be positive.
(c) Evaluate the net torque for θ = 0°, θ = 36.9°, and θ = 90.0°. Let q = ± 3.0 μC, d = 7.0 cm, and E = 2.0 × 104 N/C.

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