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Electricity
8sc big20 electricity
Term | Definition |
---|---|
electric force | the force between charged objects |
photocell | the part of a solar panel that converts light into electrical energy |
conductor | material in which charges can move freely |
resistance | opposition to the flow of electric charge; expressed in ohms |
Law of Electric Charges | law that states like charges repel and opposite charges attract |
conduction | method of charging an object when electron are transferred from one object to another by direct contact |
voltage | difference in energy per unit charge as a charge moves between two points in an electric circuit(same as potential difference) |
potential difference | energy per unit charge; the difference in energy per unit charge as a charge moves between two points in an electric circuit (same as voltage); expressed in volts |
static electricity | buildup of of electric charges on an object |
load | device that uses electric energy to do work |
cell | a device that produces electric current by converting chemical energy into electrical energy |
battery | device that is made of several cells and that produces an electric current by converting chemical energy into electrical energy |
insulator | material in which charges cannot easily move |
parallel circuit | a circuit in which different loads are located on separate branches |
current | rate at which charge passes a given point; expressed in amperes |
induction | method of charging an object that occurs when charges in an uncharged object are rearranged w/o direct contact with charged object |
electric power | rate at which electrical energy is used to do work, expressed in watts(W) |
circuit | complete closed path through which electric charges flow |
electric discharge | loss of static electricity as charges move off an object |
series circuit | a circuit in which all parts are connected in a single loop |