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Mag. and Electricity
Magnetism and Electricty
Term | Definition |
---|---|
poles | The places on a magnet where the force is the strongest |
attract | The pulling together of two unlike poles of a magnet |
repel | the pushing apart of two like poles of a magnet |
magnetism | the invisible force that surrounds every magnet |
magnetic field | the space in which the lines of force are found |
lines of force | lines along which a magnetic force acts |
electromagnet | temporary magnet created by the flow of electrons |
compass | magnets that align themselves with the Earth's poles |
conductor | a material that allows electrical energy to flow through easily |
insulator | materials that prevent the flow of electrons |
voltage | the difference in electrical potential, measured in volts |
current electricity | the movement of electrons which creates the flow of electricity |
static electgricity | the buildup of electric charge on an object that remains until it is quickly discharged. |
resistance | a measure of how difficult it is for electrons to flow. measure in ohms |
switches | used to open and close circuits |
fuses & circuit breakers | devices that will either melt or trip to prevent the build up of heat that may cause a fire |