Four point charges are placed at the corners of a square of side a = 0.15 m
PHYSICS · Subjective · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
Four point charges are placed at the corners of a square of side a = 0.15 m. Charges at three consecutive corners are +2.0 μC each, while the charge at the fourth corner is −2.0 μC. Determine the magnitude of the electric field at the centre of the square.