Electricity and Magnetism Test Review

Front

What is the effect of increasing the number of loops around an iron core on the strength of the magnetic field?

Back

Increasing the number of loops around an iron core increases the strength of the magnetic field.

Front

What is the term for the force that causes electric charges to move?

Back

Voltage difference.

Front

What does a generator convert?

Back

A generator converts mechanical energy to electrical energy.

Front

What happens when two like poles of magnets are aligned?

Back

They will repel each other.

Front

Which material is commonly used to make permanent magnets?

Back

Iron.

Front

What is the relationship between current and magnetic field strength?

Back

Increasing the current flowing through a wire increases the strength of the magnetic field.

Front

What is resistance in an electrical circuit?

Back

Resistance is the opposition to the flow of electric current.

Front

What is static electricity?

Back

Static electricity is the accumulation of electric charge on the surface of objects.

Front

What is the role of an electromagnet?

Back

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current.

Front

What is the difference between AC and DC current?

Back

AC (Alternating Current) changes direction periodically, while DC (Direct Current) flows in one direction.