A point charge is fixed at the origin

PHYSICS · Subjective · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

+2.0\,\mu\text{C}

point charge is fixed at the origin. A

+3.0\,\mu\text{C}

charge is fixed on the

x

-axis at

x = 0.40\,\text{m}

and a

-1.5\,\mu\text{C}

charge is fixed on the

x

-axis at

x = -0.20\,\text{m}

. Calculate the magnitude of the net electrostatic force exerted on the charge at the origin. Include the correct unit.