What creates a magnetic field?

What is the SI unit of magnetic field strength?

A current-carrying wire produces what around it?

What force acts on a moving charge in a magnetic field?

If a charged particle moves parallel to a magnetic field, what is the magnetic force on it?

Which of these devices uses the principle of moving charges in a magnetic field?

The direction of the magnetic force on a moving charge is given by:

What happens to the magnetic field strength as you move farther away from a current-carrying wire?

Which of the following materials is NOT strongly affected by magnetic fields?

What do magnetic field lines represent?