Magnetism Basics

Front

What is the right-hand rule for magnetic fields?

Back

If you point your thumb in the direction of the current flow, then the direction your fingers curl around a wire will indicate the direction of the magnetic field created by that current.

Front

How can you increase the strength of an electromagnet?

Back

Increase the number of turns in the coil, increase the current flowing through the coil, or use a core material with higher magnetic permeability.

Front

Name a few common magnetic materials.

Back

Iron, nickel, cobalt, alloys.

Front

How does Earth's magnetic field protect us from solar wind?

Back

The Earth's magnetic field deflects charged particles from the solar wind.

Front

How does magnetic force affect charged particles?

Back

Charged particles experience a force perpendicular to their motion and the magnetic field lines.

Front

What is magnetism?

Back

Magnetism is a physical phenomenon produced by the motion of electric charge, resulting in attractive and repulsive forces between objects.

Front

What are the two types of magnetic materials?

Back

Ferromagnetic materials (strongly attracted to magnets) and paramagnetic materials (weakly attracted to magnets).

Front

What is 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 formula for the magnetic force on a charged particle?

Back

F = q(v × B), where F is the magnetic force, q is the charge, v is the velocity of the particle, and B is the magnetic field.

Front

What is magnetic permeability?

Back

Magnetic permeability is a measure of how easily a material can become magnetized or how well it can conduct magnetic lines of force.