G5 3Q SCI Magnetism Quiz

What is the invisible force around a magnet that can attract or repel certain objects?

• Gravity

• Friction

• Magnetic force

• Electricity

What is the area around a magnet where the magnetic force is felt?

• Magnetic field

• Vacuum

• Atmosphere

• Ocean

What material is commonly attracted to a magnet?

• Wood

• Plastic

• Iron

• Glass

Which of the following is not a component of an electromagnet?

• Coil of wire

• Copper wire

• Iron nail

• Battery

What affects the strength of an electromagnet?

• Number of turns of the wire

• Color of the wire

• Length of the wire

• Thickness of the wire

What affects the strength of an electromagnet?

• Number of batteries

• Size of the batteries

• Color of the batteries

• Shape of the batteries

What is the purpose of a soft iron core in an electromagnet?

• To increase resistance

• To decrease magnetic force

• To decrease current flow

• To increase magnetic force

What happens to the strength of an electromagnet if the number of turns of the wire is increased?

• It increases

• It becomes zero

• It remains the same

• It decreases

What happens to the strength of an electromagnet if the number of batteries is increased?

• It increases

• It becomes zero

• It remains the same

• It decreases

What is the purpose of a battery in an electromagnet?

• To provide magnetic force

• To provide light

• To provide heat

• To provide sound