A point charge Q_1 is distance r from the center of a dipole consisting of charges (+-) q_2 separated by distance s. The charge is located in the plane that bisects the dipole. At this instant, assuming r s, what is the magnitude of the torque on the dipole? Express this factor in terms of q_2, Q_1, s, pi, and r. torque= l*F

Question

A point charge Q_1 is distance r from the center of a dipole consisting of charges (+-) q_2 separated by distance s. The charge is located in the plane that bisects the dipole. At this instant, assuming r >>s, what is the magnitude of the torque on the dipole? Express this factor in terms of q_2, Q_1, s, pi, and r. torque= l*F

anonymous · Answer

F=Q1∗q2∗s/4∗π∗r3
l = sSin (theta)