factors affecting resistanceThere are four main factors which affect the resistance of a material. These are:
The length of the wire.
The thickness of the wire.
The temperature of the wire.
The type of material the wire is made of.
pragya19012006:
it is the answer
The last one can also be written as resistivity
my question.. how does temperatue affect the resitence
Pure metal has positive temperature coefficient of resistance. For good conductor like copper, it has positive temperature coefficient. For 1°C increase in temperature, resistance will increase by 0.39%.
Insulators like plastic, rubber have negative temperature coefficient of resistance. Some have zero temperature coefficient of resistance i.e. resistance is independent of temperature.
Insulators like plastic, rubber have negative temperature coefficient of resistance. Some have zero temperature coefficient of resistance i.e. resistance is independent of temperature.
whar
what
Right pragya
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Ohh Thanks for ur answer!!!
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These are two main.:
Length of the wire
Thickness of the wire
Hope it helps
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