state the factors on which resistance of a conductor depend
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material of the conductor
length of conductor
thickness of conductor
temperature of conductor
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Resistance of conductor depends on following factor:
Resistance of conductor is directly proportional to length (1) of the conductor.
R ∝ l
Resistance of conductor is inversely proportional to area of cross section of conductor.
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Resistance also depends on a material of conductor §.
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Resistance and resistivity also depends on temperature.
2.Metals have more free electrons than glass to carry currents. That’s why glass is bad conductor and metals are good conductors.
3.Alloys are used rather than pure metals in electrical heating devices, since they have low electrical conductivity and also low melting point.
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