Electricity Theory
The movement of electrons from one atom to another along a conductor.
What is electricity?
A constant, even-flowing current that travels in one direction only is produced by chemical means.
What is direct current?
The unit measures the pressure or force that pushes electric current through a conductor.
What is a volt?
This prevents excessive current from passing through a circuit.
What is a fuse?
The name given to all forms of energy that exist.
What is the electromagnetic spectrum?
The flow of electricity along a conductor.
What is an electric current?
a rapid, alternating and interrupted current, flowing first in one direction and then in the opposite direction; produced by mechanical means and changes direction 60 times per second.
What is alternating current?
The unit that measures the strength of an electric current.
What is an ampere?
A switch that automatically interrupts or shuts off an electric circuit at the first indication of an overload.
What is a circuit breaker?
What is long wavelengths?
Any material that conducts electricity. Examples include tap water and copper.
What is a conductor?
An apparatus that changes alternating current to direct current.
What is a recitifer?
A unit that measures the resistance of an electric current.
What is an ohm?
This completes an electric circuit and carries the current safely away.
What is grounding?
These speed up chemical reactions.
What are catalysts?
Also known as an insulator, any material that does not transmit electricity. Examples include wood or cement.
What is a nonconductor?
An apparatus that changes direct current to alternating current.
What is an inverter?
This unit measures how much electric current is being used per second.
What is a watt?
What is a ground fault indicator?
Visible light makes up this much of sunlight.
What is 35%
The path that negative and positive electric currents take from the generating source through the conductors and back to the generating source.
What is a complete electric circuit?
Appliances that must be plugged in for use are examples of this type of current.
What is an alternating current?
This current is used for facial and scalp treatments.
What is a milliampere?
This certifies the safety of electrical appliances.
What is Underwriter's Laboratories?
This type of light prompts the skin to produce vitamin D, a fat-soluble vitamin good for bone growth and health.
What is ultraviolet light?