Two point charges are fixed in the plane: a charge at the origin and a charge at

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

Problem

Two point charges are fixed in the

xy

plane: a charge

+Q

at the origin and a charge

+2Q

(d, 0)

. Consider the net electric field magnitudes at the following three points: • Point A at

(\frac{d}{2}, 0)

• Point B at

(0, d)

• Point C at

(d, d)

Rank the magnitudes of the net electric field at these points from greatest to least.