Magnetism Quiz

What happens when a magnet is broken into pieces?

• Each piece loses its magnetism
• Each piece becomes a magnet with two poles
• The pieces only retain the North pole
• The pieces only retain the South pole

Which of the following materials is NOT magnetic?

• Iron
• Nickel
• Copper
• Cobalt

When a magnet is freely suspended, which direction does the North pole point?

• East
• West
• Geographic North
• Geographic South

What is the primary difference between soft iron and hard steel in terms of magnetism?

• Soft iron retains magnetism longer
• Hard steel loses magnetism quickly
• Soft iron loses magnetism quickly
• Hard steel cannot be magnetized

Which method of magnetization involves stroking a magnet along a steel bar?

• Induction
• Electrical Method
• Stroking
• Demagnetization

What is the effect of increasing the current in a solenoid on magnetization?

• Decreases magnetization
• Increases magnetization
• No effect on magnetization
• Reverses magnetization

What do magnetic flux lines represent?

• The speed of a magnet
• The strength and direction of the magnetic field
• The temperature of the magnet
• The weight of the magnet

How can you shield an object from magnetic fields?

• By placing it in a vacuum
• By enclosing it in a hollow magnetic sphere
• By using non-magnetic materials
• By heating the object

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

• They enter the hollow interior
• They are absorbed by the sphere
• They pass through the sphere's wall
• They disappear

Which of the following is a method of demagnetization?

• Stroking with a magnet
• Heating until red
• Induction
• Using a compass