Physics Year Exam 23/24

What is a magnet?

• An object that only attracts magnetic material

• An object that attract plastics

• An object that repels all metals

• An object that emits light when rubbed

What is the direction of the magnetic field lines around a bar magnet?

• From the south pole to the north pole inside the magnet

• From the north pole to the south pole inside the magnet

• From the north pole to the south pole outside the magnet

• From the south pole to the north pole outside the magnet

Which of the following materials are attracted to magnets?

• Aluminum

• Copper

• Iron

• Plastic

What happens when you break a magnet in half?

• Each half becomes a new magnet with both north and south poles

• One half becomes a new magnet with a north pole, and the other half becomes a new magnet with a south pole

• Both halves lose their magnetism

• The magnet becomes stronger

Which pole of a magnet points towards the Earth's geographic North Pole?

• North pole of the magnet

• South pole of the magnet

• Both poles point to the North Pole

• Neither pole points to the North Pole

What is a magnetic field?

• The space around a magnet where its force can be felt

• The path a magnet follows when placed on a surface

• The temperature at which a magnet loses its magnetism

• The weight of a magnet in a magnetic field

The line of actions find in magnetic field is called

• Tesla

• Magnetic flux

• Ampere

• Magnetic domain

How can you increase the strength of an electromagnet?

• Increase the number of turns in the coil

• Decrease the current passing through the coil

• Use a non-magnetic core

• Decrease the number of turns in the coil

What is a magnetic domain?

• A small magnet

• A region within a material where the magnetic fields of atoms are aligned

• A region without any magnetic field

• A type of magnetic pole

Which material can be easily magnetized?

• Rubber

• Glass

• Soft iron

• Plastic