Electromagnetism

What is magnetism?

• A. A force that only repels certain materials

• B. A force that can attract or repel certain materials

• C. A force that creates an electric current

• D. A force that only attracts metal materials

Which of the following materials is affected by magnetism?

• A. Wood

• B. Glass

• C. Iron

• D. Plastic

What happens when two opposite poles of magnets are brought together?

• A. They repel each other

• B. They attract each other

• C. They create an electric current

• D. They form a magnetic field

Where does the magnetic field start and end in a magnet?

• A. Starts at the South pole and ends at the North pole

• B. Starts at the North pole and ends at the South pole

• C. Starts at the center of the magnet

• D. Starts at any point in the magnet and ends at the other end

The region around a magnet where magnetic forces can be detected is called:

• Magnetic field

• Electric field

• Gravitational field

• Radiation zone

Which of the following is an example of a non-magnetic material?

• Iron

• Nickel

• Aluminum

• Cobalt

Which type of magnet does not lose its magnetism easily?

• Temporary magnet

• Artificial magnet

• Permanent magnet

• Electromagnet

What is an electromagnet?

• A magnet made from a natural magnetic material

• A magnet created by an electric current flowing through a coil

• A magnet that is permanent

• A magnet created by friction

Which material is commonly used as the core of an electromagnet to increase its strength?

• non-magnetic material

• magnetic material

Which material is commonly used to make the core of an electromagnet?

• Copper

• Aluminum

• Iron

• Steel