Alternating Current: Electric current that repeatedly reverses direction, twice each cycle. Usually at 60 cycles per second or hertz in
North America or 50 hertz elsewhere.
North America or 50 hertz elsewhere.
Ampere: SI unit of electric current. A flow of one coulomb of charge per second is one ampere.
Diode: An electronic device that restricts current to flow in a single direction in an electric circuit.
Direct Current: Electric current whose flow of charge is always in one direction.
Electric Current: The flow of electric charge; measured in amperes.
Electric Power: The rate at which electrical energy is converted into another form such as light heat, or mechanical energy.
Electric Resistance: The resistance of a material to the flow of electric current through it measured in ohms.
Ohm: The SI unit of electric resistance. One ohm is the resistance of a device that draws a current of one ampere when a voltage of one volt is impressed across it.
Ohm Law: The statement that the current in a circuit is directly proportional to the voltage impressed across the circuit and is inversely proportional to the resistance of the circuit.
Potential difference: The difference in electric potential between two points. Free charge flows when there is a difference, and will continue until both points reach a common potential.
.Voltage source: A device, such as a dry cell or generator; that provides a potential difference