PHYSICS · Single correct · CBSE · Physics · Electric Charges and Fields · Electric Charges and Fields
Problem
A uniformly charged plastic rod is broken in half, and a bar magnet of similar shape is also broken in half. Which comparison between the two outcomes is most accurate?
(a) Both rod fragments and both magnet fragments become neutral, each containing equal amounts of opposite charge or pole.
(b) Each rod fragment retains the original sign of electric charge, whereas each magnet fragment acquires both a north and a south pole.
(c) The rod fragments create closed electric field lines, whereas the magnet fragments produce field lines that extend outward without returning.
(d) Each rod fragment keeps the same sign of charge it had, while each magnet fragment keeps only the pole that was originally at its end, forming a north-only and a south-only fragment.