Charge A, +1 μC, is positioned at the origin of a coordinate system as shown below. Charge B, −1 μC, is fixed at x = 3 m.

Question

Charge A, +1 μC, is positioned at the origin of a coordinate system as shown below. Charge B, −1 μC, is fixed at x = 3 m.
(a) Determine the magnitude and direction of the force that charge B exerts on charge A.
(b) What is the force that charge A exerts on charge B?

Chanz · Answer

F = kq1q2/r^2 = 9e9*1e-6*-1e-6/3^2. They exert the same force on each other (but opposite directions)