Wikimedia
Wikipedia: Current (Electricity)
Wikipedia offers detailed information on electrical current, including many hyperlinked related terms.
University of Waterloo (Canada)
Computer Assisted Chem. Tutorial/chemistry of Batteries
A superb explanation of how a battery works. Discusses the associated chemistry which explains how a battery produces a voltage. Includes a series of "Confidence Building Questions."
Oswego City School District
Regents Exam Prep Center: The Series Circuit
Explains how a series circuit works, accompanied by an animation. Lists the rules and formulas that apply to a series circuit.
Physics Classroom
The Physics Classroom: Current Electricity: Circuit Connections: Series Circuits
When two or more electrical devices in a circuit can be connected, it is considered a series connection or a parallel connection. When all the devices are connected using series connections, the circuit is referred to as a series...
Khan Academy
Khan Academy: Using the Right Hand Rule
Physicists use a hand mnemonic known as the right-hand rule to help remember the direction of magnetic forces. The right-hand rule is based on the underlying physics that relates magnetic fields and the forces that they exert on moving...
Physics4kids
Physics4 Kids: Electricity and Magnetism: Direct Current
Direct current, defined and illustrated.