Basic Definitions
The flow of electric charge or electrons
What is current?
The restriction to the flow of electrons.
What is resistance?
The subatomic particles in an atom.
What are protons, neutrons and electrons?
The reason humans get electric shocks.
Human body is a good conductor.
A substance or device which does not readily conduct electricity
What is an insulator?
The route that electrons can flow along.
What is an electrical circuit?
The voltage supplied at a household outlet in the United States.
What is 110V?
The range of milliamperes most humans can take.
What is 1 - 3 mA?
A substance which allows the electric current to pass through it
What is a conductor?
The difference in charge between two points.
What is voltage?
3 examples of a good conductor.
What are *any 3 (silver, gold, copper, aluminum, mercury, steel, iron, sea water, concrete)?
An electric current that reverses direction at regular intervals, having a magnitude that varies continuously in sinusoidal manner.
What is an alternating current?
A wire attached to the electrical system that's been pushed securely into the ground.
What is a ground wire?
The liquid or gel that keeps the electrons from going straight from the anode to the cathode within the battery.
What is an electrolyte?
4 examples of a good insulator.
What are *any 4 (rubber, glass, pure water, oil, air, diamond, dry wood, dry cotton, plastic)?
The three pins in a 3-pin plug.
What are Live (or hot) pin, Neutral pin, and Ground (or earth) pin?
Resistance = Voltage / Current
What is Ohm's Law?
The product of electric force (in volts) and current (in amperes)
What is electrical power (watts)?
The device that uses electricity to heat a filament or wire until it is hot enough to glow.
What is an incandescent light bulb/source?
The current used to operate a 40 Watts bulb at normal household voltage.
What is 0.36 Amps?