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Electricity
Unit 5-Electricity
Term | Definition |
---|---|
electrical charge | basic property of all matter; occurs when electrons are transferred between materials |
electroscope | a device used to detect electric charge |
static electricity | the accumulation of excess electric charge on an object; charges at rest |
conduction | charging by direct contact |
induction | charging by indirect contact |
friction | charging by rubbing |
electric field | the region surrounding an electric charge |
current | flow of charges in a single direction |
direct current | current flows in only one direction through a wire |
alternating current | current changes direction in regular pattern |
resistance | the tendency for a material to oppose the flow of electrons |
ohms | unit used to measure resistance |
amperes | unit used to measure current |
volts | unit used to measure voltage |
Ohm’s Law | describes the relationship between voltage, current, and resistance in a circuit |
conductor | a material in which electrons are able to move easily |
insulator | a material in which electrons are not able to move easily |
parallel circuit | circuit in which current has multiple paths for current to flow through |
series circuit | circuit in which current has only one loop or path to flow through |