positive electrical charge; electrons, which carry a negative charge; and neutrons, which carry no charge.
a material which electricity, heat or sound can flow through.
a material which is used to reduce the conduction of electricity, heat or sound.
a path in which electrons from a voltage or current source flow.
Voltage is what makes electric charges move.
a measure of the difficulty of passing an electric current through a substance.
Ohm's law says that in an electrical circuit, the current passing through a resistor between two points, is related to the voltage difference between the two points, and are related to the electrical resistance between the two points.
A battery converts chemical energy into electrical energy by a chemical reaction.
A fuse is a device that shuts off the power to an electrical circuit when too much electric current flows through it.
A capacitor is an electronic device that stores electric energy. It is similar to a battery, but can be smaller, lightweight and a capacitor charges or discharges much quicker.
Electromagnetism is the study of the electromagnetic force, one of the four fundamental forces of nature. The electromagnetic force pushes or pulls anything that has an electric charge, like electrons and protons.
A resistor limits the electric current that flows through a circuit.