Magnetism Flashcards

All 5 cards in this deck

What is the rule for the force between magnetic poles?

Like poles repel, unlike poles attract.

What type of force is the attraction or repulsion between two magnetic poles?

A non-contact force — the magnets do not have to touch to exert a force on each other.

Name the four magnetic materials named in the specification.

Iron, steel, cobalt and nickel.

Which material is chosen for a part that must be easily magnetised and demagnetised, such as an electromagnet's core?

Iron — it is a magnetic material that is easily magnetised and demagnetised.

True or false? A bar magnet can repel an unmagnetised piece of iron.

False. The force between a magnet and a magnetic material is always attraction.