The bob of a simple pendulum has mass 2g and a charge of 5.0 μC. It is at rest in a uniform horizontal electric field of intensity 2000 V/m. At equilibrium, the angle that the pendulum makes with the vertical is – (take g = 10 m/s^{2})

(1) tan^{–1} (5.0)

(2) tan^{–1} (0.5)

(3) tan^{–1} (0.2)

(4) tan^{–1} (2.0)