12.17

Front

What is an electron?

Back

An electron is a subatomic particle with a negative charge that orbits the nucleus of an atom.

Front

How can you make an electromagnet stronger?

Back

You can make an electromagnet stronger by adding more coils to the iron core.

Front

What is a wire coiled around an iron core called?

Back

An electromagnet.

Front

What happens to a neutral metal object when a charged metal rod is brought near it?

Back

The neutral metal object becomes positively charged.

Front

What does it mean when objects have equal numbers of positive and negative charges?

Back

They are electrically neutral.

Front

What is the role of coils in an electromagnet?

Back

Coils create a magnetic field when an electric current passes through them.

Front

What is the relationship between electric current and magnetism?

Back

Electric current produces a magnetic field, which is the principle behind electromagnets.

Front

What is the difference between a magnet and an electromagnet?

Back

A magnet is a material that produces a magnetic field naturally, while an electromagnet requires electric current to generate a magnetic field.

Front

What is static electricity?

Back

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

Front

What is charge polarization?

Back

Charge polarization occurs when a neutral object becomes charged due to the influence of a nearby charged object.