Quiz on Magnetism

What materials can be attracted by a magnet?

• Glass

• Copper

• Wood

• Iron

What happens when a magnet is freely suspended?

• It spins randomly

• It aligns in a North-South direction

• It floats in the air

• It loses its magnetism

Which of the following materials is non-magnetic?

• Nickel

• Steel

• Cobalt

• Aluminum

What is the result of breaking a magnet into pieces?

• It can only attract larger objects

• It becomes a non-magnetic material

• Each piece becomes a magnet with two poles

• It loses its magnetism

How can a bar of soft iron become magnetized?

• By heating it

• By induction from a strong magnet

• By placing it in water

• By rubbing it with wood

What is the effect of stroking a steel bar with a magnet?

• It has no effect

• It magnetizes the bar in the opposite direction

• It demagnetizes the bar

• It makes the bar weaker

What is the Grip Rule related to?

• The strength of a magnet

• The direction of current in a solenoid

• The type of materials used

• The size of the magnet

What do magnetic flux lines represent?

• The color of the magnet

• The temperature of the magnet

• The weight of the magnet

• The strength and direction of the magnetic field

What happens to magnetic field lines when they encounter a hollow magnetic sphere?

• They disappear

• They change direction

• They enter the hollow interior

• They pass through the sphere's wall but not into the interior

Which method can be used to plot magnetic flux lines?

• Using a laser

• Using a computer program

• Using a ruler and protractor

• Using a compass or iron filings