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Electricity Unit Vocabulary

direct current current that flows in one direction
alternating current current that changes direction regularly
series circuit a circuit in which all current (electrons) flows through a single path.
parallel circuit a circuit in which there is more than one path for current.
electric power the rate at which electrical energy is used
Ohm's Law current equals voltage divided by resistance
terminal points where electrons leave or enter a battery.
wet-cell battery electric power source with a liquid center.
dry-cell battery electric power source with a dry or pastelike center .
electricity flow of electrons
static electricity build up of electrical charges
electric current movement of electrons from one place to another
ampere the unit used to describe how much electric current flows through a wire
ampere amp
circuit a path for electric current
closed circuit a complete, unbroken path for electric current
open circuit an incomplete, or broken path for electric current
conductor material through which electricity passes easily
conductor silver, gold, aluminum, and copper
insulator material through which electricity does not pass through easily
insulator plastics, rubber, wood, and glass
resistance measure of how easily electric current will flow through a material
Ohm the unit used to measure resistance
electromotive force the push that keeps the current (electrons) flowing in an electric current
volt the metric unit used to measure electromotive force that tells the amount of push
voltage the energy that a power source gives to electrons in a circuit
battery a source of voltage that changes chemical energy into electrical energy
Ohm's Law I = V/R
electric power the rate at which electrical energy is used
Kilowatt-hour a unit of electrical energy; the amount of energy a 1,000-watt bulb uses when left on for 1 hour
Created by: jtooley