List the factors on which the resistance of a conductor in the shape of a wire depends on metals good conductors of electricity whereas glass is a bad conductor of electricity give reason why are alloys commonly used in electric heating devices
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The resistance of a conductor depends on ....
• lenght of the conductor
• area of cross section of the wire
• nature of the conductor
Metals are good conductor of electricity because they have free elctrons to lose whereas glass do have free electrons to lose.
Alloys are commonly used in electrical heating appliances because they have vary high resistivity and they do not undergo oxidation or burn easily.
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