PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
Two point charges of +2μC and −3μC are kept 10cm apart in air. If the −3μC charge is replaced by a +3μC charge while keeping everything else the same, how will the electrostatic interaction change?
(a) Magnitude remains the same; force is still attractive
(b) Magnitude becomes three times; force becomes repulsive
(c) Magnitude remains the same; force becomes repulsive
(d) Magnitude becomes three times; force remains attractive