A rectangular bar magnet is first split lengthwise along its central axis
PHYSICS · Subjective · CBSE · Physics · Magnetism and Matter · Magnetism and Matter
Problem
A rectangular bar magnet is first split lengthwise along its central axis, producing two half-strength magnets that retain the original end polarities. Each half is then broken transversely at its midpoint, yielding four fragments in total. How many north poles exist among the four fragments, and how many of those north poles were created during the second break? Briefly justify your answer in one or two sentences.