Electricity and electric circuits
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Created by:
trevorvestergaard on December 3, 2009
Subjects:
Electricity and electric circuits
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41 terms
Terms | Definitions |
|---|---|
 acetate | a type of plastic used in photographic film |
| ammeter | a meter that measures the flow of electrical current in amperes |
| amperes | the unit for measuring electrical current; the abbreviation is amp. |
| coulomb | a unit of electrical charge equal to the amount of charge transferred by a current of 1 ampere in 1 second |
| current electricity | a flow of electric charge |
| energy | (physics) the capacity of a physical system to do work |
| force | a push or pull from an object |
| insulators | materials that prevent electric charges from flowing easily |
| joule | a unit of electrical energy equal to the work done when a current of one ampere passes through a resistance of one ohm for one second |
| junction point | the location where a circuit divides into multiple poins or where multiple points combine |
| neutral | an object or substance that has no charge |
| potential difference | the difference in electrical charge between two points in a circuit expressed in volts |
| potential energy | stored energy |
| power | (physics) the rate of doing work |
| power rating | Amount of energy that changes form in a machine each second; Wattage |
| proton | a particle with positive charge |
| static charge | Build up of electrons on an object |
| Van de Graaff generator | electrical device that produces a high voltage by building up a charge of static electricity |
| terminals | points which must be touched by electrons in order to make a complete circuit. |
| resistor | resists the flow of electrons |
| resistance | the opposition to the flow of electric charge |
| parallel circuit | a closed circuit in which the current divides into two or more paths before recombining to complete the circuit |
| Ohm's law | describes the mathematical relationship present in most circuits. |
| ohmmeter | a meter for measuring electrical resistance in ohms |
| ohm | a unit of electrical resistance equal to the resistance between two points on a conductor when a potential difference of one volt between them produces a current of one ampere |
| conductors | a substance that allows energy transfer |
| laws of static charge | 1.)opposites attract, 2.) same repel, 3.( neutral attracts anything |
| kinetic energy | Energy created by movement |
| kilowatt-hour | the amount of kilowatts generated in an hour |
| electrodes | a metal strip that conducts electricity |
| electrochemical cells | a system changes chemical energy to electrical energy |
| electrical resistance | a material's opposition to the flow of electric current |
| electrical power | the product of voltage and current |
| electric potential energy | Energy a charge has due to its location in an electric field |
| electric load | any device that transforms electrical energy into other forms of energy, such as a light bulb, buzzer, heater, and motor (8.2) |
| electric force | the force between charged objects |
| electric current | a flow of electricity through a conductor |
| electric circuit | an electrical device that provides a path for electrical current to flow |
| charging by conduction | two objects touch and charge is transfered. |
| charging by induction | bringing a charged object near a neutral object in order to charge the neutral object |
| circuit diagram | A diagram with symbols that shows all of the components in a circuit and how they are connected. |
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