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Electricity Physics

TermDefinition
Electric charge Property of material that allows it to act a force on other charged objects
static electricity electric charge on the surface of an object caused by electrons transferring through friction
electric current the rate of flow of charge (charge flows per sec)- amps A
ammeter measures current in series
series only one route for the current to flow, current same at any point
parallel more that one route for current to flow, current splits down each possible path
current-brightness current same everywhere in series current splits at junction (more goes down less resistant) brightness depends on current
insulators electrons cannot move, current flows slowly, high resistance
conductor electrons can move, current flows quickly, low resistance
Symbols Lamp cell switch open/closed battery wire / joined wires ammeter voltmeter circle with cross in short line, long line circle line circle, line either connected or not to one of the circles two cells straight line, joined- dot with another wire coming off A in circle V in circle
resistance opposition to the flow of current - ohms
Conduction in metal, free electrons collide with atoms and more electrons which vibrate and pass the energy on
potential difference push cell provides to make charges move round- bolts V
voltmeter measures p.d.
Created by: SG009
 

 



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