question_answer 9)

A system has two charges and located at points A : (0, 0, ?15 cm) and B : (0, 0, + 15 cm) respectively. What are the total charge and electric dipole moment of the system?  

Answer:

Clearly, the given points are lying on z-axis.                 Distance between charges                 = 15 + 15 = 30 cm = 0.3 m                 Total charge                                 Dipole moment                                 along z-axis.