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Magnetism can be explained in terms of _____ spin patterns.

Lodestone is a name for a naturally occurring magnetic material that is also called _____.

What type of resistor operates by moving the wiper arm with a screw of some number of turns?

In the English system, the total force producing a magnetic field is the _____.

To locate the north pole of an electromagnet, use the _____-hand rule.

The north pole of a compass needle points in the direction of the south geographic pole.

When a magnetic material’s molecules are all lined up, and increases in current flow no longer cause increases in magnetic field strength, the material has reached _____.

Earth contains magnetic poles.

Magnetic lines of force are referred to as _____.

Of the three basic classifications of magnetic materials, _______________ materials are metals that are most easily magnetized.