Two identical bar magnets are placed on the same straight line with their north poles…
PHYSICS · Single correct · AP · Physics 2: Algebra-based · Magnetism and Electromagnetism · Magnetism and Electromagnetism
Problem
Two identical bar magnets are placed on the same straight line with their north poles facing each other, separated by a small distance d. What is the resultant magnetic field at the midpoint between the two north poles on the common axis?
(a) Half the field produced by a single magnet at that point, directed along the axis.
(b) Maximum, because the fields from both magnets reinforce along the same direction.
(c) Zero, because the fields due to the two magnets cancel at that point.
(d) Directed perpendicular to the axis joining the two magnets.