# Electricity Terms

 The flashcards below were created by user 3minut3s on FreezingBlue Flashcards. static electricity a build up of either negative or positive charges circuit a path that allows electricity to flow current the rate of flow of electric charges alternating current an electric current that reverses its direction at repeated intervals. AC is the abbreviation direct current an electric current that flows in one direction only. DC is the abbreviation dry cell an energy source that uses dry chemicals. A 9 volt battery is an example wet cell an energy source that uses liquid or wet chemicals. A car battery is an example volt the measurement unit of voltage. Voltage is reduced by each resistor voltage the amount of potential energy that each unit of electrical charge has V symbol for volts amperes unit for measuring electrical current amps abbreviation for amperes and sometimes used for the symobl for amperes A symbol for amperes. Amps is a more current symbol ohms measure for electrical resistance abbreviation for Ohms schematic a diagram using electrical symbols showing an electric circuit electrolyte chemicals that form ions and conduct current when dissolved in water galvanometer/potentionmeter a circular device that varies the resistance to electrical current. A dimmer is an example electrode a conductor through which electric current is passed. It may be constructed of metal, such as copper, silver, lead, or sinc or nonmetal substance such as carbon insulator a material or device that prevents or reduces the passage of electricity heat or cold or sound resistor devices that are used to control current in many circuits series circuit circuit in which the current has one path parallel circuit a circuit in which the current takes more than one path open circuit circuit in which there is a break so that current cannot flow closed circuit circuit in which there are no breaks and current can flow fuse the protection device. Main part is a metal wire or strip that melts when too much current flows which breaks the cicruit circuit breaker a device that trips like a switch and opens the circuit when overloaded to prevent fires coulomb the unit for electric charge. Its symbol is C electroscope an instrument that demonstrates positive and negative charges load something that uses electricity energy source useful energy can be extracted or recovered either directly or by means of a conversion or transformation process conductor something that transfers electricity, heat or cold semi-conductor a solid material that has electricity conductivity between those of a conductor and an insulator Law of Electrical Charges opposite electrical charges attrace; like electrical charges repel electric field the space surrounding an electric charge electric force the force that charged objects exert on each other thermocouple a device for measuring temperature made of a pair of different metals joined at both ends photocell a type of resistor. When light strikes the cell, it allows current to flow freely. When dark, its resistance increases solar panel a group of olar cells arranged into a panel that can be installed into flat surface. The panel captures sunlight and convert it into DC power GFCI breaks the circuit and is used as a safety device where water is used Author3minut3s ID7126 Card SetElectricity Terms DescriptionN/A Updated2010-02-17T02:59:07Z Show Answers