Three charges of magnitude 3.0 × 10^-4 C each are located at x = 1.0 m, y = 0.0 m, at x = 0.0 m, y = 0.0 m, and at x = -1.0 m, y = 0.0 m. The one in the middle is negative, while the other two are positive. What is the net Coulombic force exerted by them on a negative 3.0 × 10^-⁵ C charge located at x = 0.0 m, y = 2.0 m? (The value of k is 9.0 × 10⁹ N · m²/C².)

Question

Quizplus · Accepted Answer

The forces due to the positive charges at x = 1.0 m and x = -1.0 m are attractive and add up, while the force due to the negative charge at the origin is repulsive. Calculating these forces and summing them gives a net force of 87 N, which is attractive.

Three Charges of Magnitude 3