Forces and Fields unit review

Front

What subatomic particle is primarily responsible for the flow of electric current?

Back

Electrons are the subatomic particles that flow to create electric current.

Front

What happens to the magnetic field produced by a wire as the electrical current increases?

Back

The magnetic field will increase as the electrical current in the wire increases.

Front

Based on field lines, will two like poles of magnets attract or repel each other?

Back

Like poles of magnets repel each other.

Front

What is the relationship between opposite and identical charges in electric interactions?

Back

Opposite charges attract, while identical charges repel.

Front

What pole is indicated by the point marked X if it is a North pole?

Back

The point marked X indicates a North pole.

Front

What is a magnetic field?

Back

A magnetic field is a region around a magnet where magnetic forces can be detected.

Front

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

Back

Magnetic field lines exit from the North pole and enter the South pole.

Front

What is the effect of increasing the distance between two magnets on their magnetic force?

Back

Increasing the distance between two magnets decreases the magnetic force between them.

Front

What is the principle of electromagnetism?

Back

Electromagnetism is the interaction between electric currents and magnetic fields.

Front

What is the role of neutrons in an atom?

Back

Neutrons contribute to the mass of an atom and help stabilize the nucleus.