Two magnetic field lines cannot intersect each other because
PHYSICS · Single correct · CBSE · Physics · Magnetic Effects of Electric Current · Magnetic Effects of Electric Current
Problem
Two magnetic field lines cannot intersect each other because
(a) The magnetic field would have two directions at the same point, which is impossible.
(b) Magnetic field lines repel each other like similar poles and therefore never cross.
(c) If two lines crossed, their fields would cancel at that point, so nature prevents the crossing.
(d) Magnetic field lines form closed loops, and two closed loops cannot cut one another.