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Electricity
Physics Unit 13
| Term | Definition |
|---|---|
| electric current | the flow of charged particles, usually electrons, inside a material that conducts electricity |
| current | measured in Amperes (A) |
| closed circuit | includes at least one continuous closed path of a conductor, such as a wire, allowing electric current to flow |
| open circuit | a path in which the connection is broken in at least one place in the loop, preventing the flow of current |
| voltage | measured in Volts (V) |
| resistance | measured in Ohms (Ω) |
| Ohm's Law | voltage is directly related to current and resistance |
| conductor | offers little resistance to the flow of current |
| insulator | a material with high resistance to the flow of current |
| series circuit | has only one path that electric current can follow. |
| parallel circuit | contains branches that provide more than one path for electric current to follow |
| electrical power | measured in Watts |
| electrostatics | the physics of lightning and charges at rest (static) |
| Coulomb's Law | Electric force is directly related to charge and inversely related to the distance squared |
| electric field | the organization of energy that carries the electric force between charges |
| like charges | repel each other |
| unlike charges | attract each other |
| multimeter | a useful instrument that measures voltage, current, and resistance. |
| charge | measured in Coulombs (C) |