8.3 Lesson Set 1 Review Flashcard

Front

What is a magnetic field?

Back

A magnetic field is an invisible field around a magnet where magnetic forces can be felt. It is produced by moving electric charges or by magnetic materials.

Front

What happens when a current flows through a coil?

Back

When a current flows through a coil, it creates a magnetic field around the coil.

Front

What is the effect of reversing the battery connections on a coil?

Back

Reversing the battery connections will reverse the direction of the magnetic field produced by the coil.

Front

How can you confirm that a magnetic force is acting on a coil?

Back

If the coil moves or vibrates when placed near a magnet, it confirms that a magnetic force is acting on it.

Front

What are attractive magnetic fields?

Back

Attractive magnetic fields are those that pull magnetic objects towards each other.

Front

What is the role of a compass in detecting magnetic fields?

Back

A compass uses a magnetic needle that aligns itself with the Earth's magnetic field, helping to detect the presence and direction of other magnetic fields.

Front

What is the relationship between electricity and magnetism?

Back

Electricity and magnetism are closely related; an electric current can create a magnetic field, and a changing magnetic field can induce an electric current.

Front

What is a current-carrying coil?

Back

A current-carrying coil is a loop of wire through which electric current flows, generating a magnetic field.

Front

What happens to the magnetic field when the current is increased in a coil?

Back

Increasing the current in a coil strengthens the magnetic field produced by the coil.

Front

What is the purpose of using a battery with a coil?

Back

A battery provides the electric current needed to create a magnetic field in the coil.