Electricity travels along these circuits to deliver power. Learn more about electric circuits. Electric Circuits Visual explanation of parallel and series circuits. Basic Electronics Complete explanations of charge, voltage, current, batteries, circuit elements, and semiconductor devices for older students or teachers. Magnets Positive and negative charges play a big role in electricity.
Magnets too are all about positive and negative charges, and they can wield a powerful force.
Magnets are used in motors to create power. Read all about it. Magnetism Humorous dialogue explains magnetism, magnetic substances, and their North and South poles. Fascinating background source, combining history and science. Along with providing a definition of magnetism, it covers the Earth's magnetosphere, magnetic field lines, and electromagnetic waves.