An Electric Dipole Consists of a Particle with a Charge

Multiple Choice

An electric dipole consists of a particle with a charge of +6 * 10^-6 C at the origin and a particle with a charge of -6*10^-6 C on the x axis at x = 3 *10^-3 m. Its dipole moment is:

A) 1.8 * 10^-8 C .m, in the positive x direction
B) 1.8 * 10^-8 C. m, in the negative x direction
C) 0, because the net charge is 0
D) 1.8 * 10^-8 C . m, in the possitive y dirrection
E) 1.8 *10^-8 C . m, in the negative y dirrection