Electricity and magnetism ** 5H10.34 ** Magnetic fields and forces

Magnetic fields

Big magnet and steel balls

WARNING: The permanent magnet has a considerable field - keep wallets and watches away.


Theory: When exposed to a magnetic field, the individual steel balls will act as tiny magnets. They will form chains aligned in the direction of the field.

Description: Place balls in chains of about 5 balls at various points around the magnet, especially near the poles. One long chain, with one ball missing in the center, strung across the gap is also useful.

Setup time: 10 minutes