Neutral Points of Bar MagnetHardQuestion 20199
Question
When a bar magnet is placed along the magnetic meridian with north pole pointing north, neutral points occur:
- AOn the axial line
- BOn the equatorial lineCorrect
- CAbove and below the magnet
- DAt the ends of the magnet
Correct answer
On the equatorial line
Explanation
When the magnet's N points toward geographic north, its axial field aids Earth's field and its equatorial field opposes it. The net field is zero on the equatorial line (broadside) where equatorial field = Earth's horizontal component.