Three charges are arranged in a square (along with point P) with sides equal to 12.5cm as in figure below. Calculate the electric field (magnitude and direction) at point P due to the three charges. Next, calculate the force (magnitude and direction on a -0.7uC charge placed at point P
(+2.0uC) at top left
(-4.0uC) at top right
(+8.0uC) at bottom right
Point P at bottom left.
Each side 12.5 cm since it is a square