Question

42 43 4

Four point-like charges are placed as shown in the figure, three of them are at the corners and one at the center of a square, 36.0 cm on each side. Find the magnitude of the net electrostatic force exerted on the point charge q 4 . Let q 1 = q 3 = +14.0 µC, q 2 = −26.0 µC, and q 4 = −52.0 µC.

Answer 1

As you know that the same charge repels each other. And opposite charge attracts each other.

So