If a charge of +2Q were placed at the origin the crossing point of the vertical and horizontal lines) of the above figure, into which quadrant would it feel a net force?

Question

Quizplus · Accepted Answer

If a charge of +2Q were placed at the crossing point of the two lines, it would produce electric field lines that point radially outward. A positive test charge placed at any point on these lines would experience a net force in the direction of the electric field. The field is strongest near the charge, so the test charge would experience the greatest force if it were placed in quadrant C.

If a Charge of +2Q Were Placed at the Origin