| A | B |
|---|
| The force exerted by a magnet. | Magnetism |
| One of two ends of a magnet where the force is the stronges. Every magnet has two. | Magnetic pole |
| An area surrounding a magnet within which the magnet can exert a force. Magnetic fields are concentrated into a pattern of lines that extend from the magnet's north pole to its south pole. | Magnetic field |
| A magnet that consists of a piece of iron or steel inside a coil of current-carrying wire | Electromagnet |
| A device that converts kinetic energy, or the energy of motion, into electrical energy | Generator |
| Electric current that flows in one direction only | Direct current |
| Electric current that reverses direction at regular intervals | Alternating current |
| A device that uses electromagnetism to increase or decrease voltage | Transformer |
| The rate at which electrical energy is generated from, or converted into, another source of energy, such as kinetic energy | Electric power |
| The unit of measurement for power, which is equal to one joule of work done or energy transferred in one second | watt |
| The unit of measurement for electrical energy equal to one kilowatt of power over a one-hour period | Kilowatt-hour |
| A continuous flow of electric charge, which is measured in amperes | Electric current |
| A closed path through which charge can flow | Circuit |
| The energy of motion | Kinetic energy |
| An object that attracts certain other materials, particulary iron and steel. | Magnet |
| A group of atoms whose magnetic fields align, or point in the same direction. | Magnetic domain |
