Esthetics Final Review Level 2| 402 questions| with complete solutions

Electrical Current correct answer: Form of energy that, when in motion exhibits magnetic, chemical or thermal effects Conductor correct answer: Any substance (material) that is easily transmits electricity, any metal can be this; allows electricity to flow through it easily Insulator correct answer: A substance (material) that does not easily transmit electricity, an example is rubber; does not allow the flow of electric current Complete circuit correct answer: Path of an electric current from the generating source through conductors & back to its original source Direct Current (DC) correct answer: Constant, even flowing current that travels in on one direction only. Example would be flashlight, cellular telephones & cordless electric drills produced by batteries Alternating Current (AC) correct answer: Rapid & interrupted current, flowing first in one direction & then the opposite direction. Facials machines & wax pots that plug into the wall outlet use this produced by generators Rectifier correct answer: An apparatus that changes alternating current to direct current Volt (Voltage) correct answer: Unit that measures the pressure or force that pushes the flow of electrons forward through a conductor, much like the waters pressure that pushes the water molecules through the hose Amp (Ampere) correct answer: Unit that measures the strength of an electric current (the number of electrons flowing through a wire) Milliampere correct answer: One thousandth of an ampere Ohm correct answer: Unit that measures the resistance of an electric current Watt correct answer: Measurement of how much electric energy is being used in one second Kilowatt correct answer: 1000 watts Fuse correct answer: Special device that prevents excess current from passing through a circuit. It is designed to blow out or melt when the wire becomes too hot from overloading the circuit with too much current - Too many appliances or faulty equipment