CTTotne Wire or a short onE(b) a thick piece of nichrome wire or a thi

1.	CTTotne Wire or a short onE(b) a thick piece of nichrome wire or a thin pieceoes the resistance of a pure metal change if its temperature decrease
Answer» In pure metals the resistance of the substance increases with the increase in it's temperature. The increase is large and fairly regular for normal ranges of temperature. ... And thus insulators are said to be in negative temperature coefficient of resistance Resistivity is the resistance of any metal of 1m3 cross section area AND 1m length. Resistivity= R×A/L Where R is resistance of conductor,A is the cross section area and L is the length of conductor. We know that , R is directly proportional to temperature. So is temperature increases then resistance increases. So this will result in increase in resistivity too. Hence onincreasing temperature result in increase in resistivity.

CTTotne Wire or a short onE(b) a thick piece of nichrome wire or a thin pieceoes the resistance of a pure metal change if its temperature decrease

Answer»

In pure metals the resistance of the substance increases with the increase in it's temperature. The increase is large and fairly regular for normal ranges of temperature. ... And thus insulators are said to be in negative temperature coefficient of resistance

Resistivity is the resistance of any metal of 1m3 cross section area AND 1m length.

Resistivity= R×A/L

Where R is resistance of conductor,A is the cross section area and L is the length of conductor.

We know that , R is directly proportional to temperature. So is temperature increases then resistance increases.

So this will result in increase in resistivity too.

Hence onincreasing temperature result in increase in resistivity.

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