Electrical Flashcards
What is Electricity?
Electricity: A Fundamental form of energy, observable in positive and negative forms, that occurs naturally ( as in lightning) or is produced ( as in a generator), and that is expressed in terms of movement and interaction of electrons.
Amp ( or ampere)
The rate at which electrical power flows through a light, tool, or appliance. Large wires can carry more electricity than small wires. The amount of current flowing is called amperage.
Circuit
A continuous loop of electrical current flowing along a conductor ( typically wires or cable) from a power source to a neutral termination point.
Conductor
Any material that allows electrical current to flow through it. Copper wire is an especially good conductor.
Continuity
An uninterrupted electrical pathway through a circuit or a fixture. A continuity test establishes if current could flow through a circuit or fixture as it should.
Current
The Movement of electron along a conductor, like a wire.
Hot Wire
Any Wire that carries voltage. In an electrical circuit, the hot wire is usually covered with black or red insulation.
Line
Identified as carrying power. In terms of an electrical connection, a Line connection carries power to a device.
Load
Any Device that uses an electric current to perform a function (work). In terms of an electrical connection, a load connection is one where power departs to preform work.
Neutral Wire
A wire that returns current at zero voltage to the source of electrical power. Usually covered with white or light gray insulation.
Ohms
Quantifiable measurement of the ease if difficulty of electron flow through a substance. As the number of Ohms in a substance increases, the substances will become a better insulator. As the number of Ohms in a substance decreases, the substances will become a better conductor.
Overload
A demand for more current than the circuit wires or electrical device was designed to carry. Usually causes a fuse to blow or a circuit breaker to trip.
Power
The actual amount of electrical energy being consumed by an electrical device or circuit. Measurable as Wattage ( or Watts).
Voltage (or Volts)
A measurement of electricity in terms of pressure.
Wattage (or Watts)