PHY 1122 Chapter Notes - Chapter 4: Surface Charge, Electric Potential, Dielectric

Four identical 12 µC charges are placed at the corners of a square of sides 44 cm, with one additional 12 µC charge placed at the center. Find the amount of work required to assemble the charge distribution described.

ssm Two identical point charges are fixed to diagonally opposite corners of a square that is 3.0 m on a side. Each charge is +2.5 µC. How much work is done by the electric force as one of the charges moves to an empty corner?

Two point charges are fixed on the y axis: a negative point charge q1 = -26 µC at y1 = +0.20 m and a positive point charge q2 at y2 = +0.37 m. A third point charge q = +8.5 µC is fixed at the origin. The net electrostatic force exerted on the charge q by the other two charges has a magnitude of 24 N and points in the +y direction. Determine the magnitude of q2.