Temperature Coefficient Of Resistivityof Resistance

Coefficient of linear expnsion of material of resistor is alpha . Its temperature coefficient of resistivity and resistance are alpha_(p) and alpha_(R) respectively , the correct relation is .

Coefficient of linear expansion of material of resistor is alph . Its temperature coefficient of resistivity and resistance are alpha_(p) and alpha_(R ) , then correct relation is

A silver wire has a resistance of 2.1Omega at 27.5^(@)C&2.7Omega at 100^(@)C Determine the temperature coefficient of resistivity of silver.

A wire has a resistance of 2.5Omega at 28^(@)C and a resistance of 2.9Omega at 100^(@)C . The temperature coefficient of resistivity of material of the wire is

Give an exmple of amateral each for which temperature coefficient of resistivity is (i) positive, (ii) negative.

There is a cylindrical wire whose temperature coefficient of resistivity is 6 times 10^-3^@C^-1 and co-efficient of linear expansion in 10^-3^@C^-1 . Its temperature coefficient of resistance is N times 10^-3^@c^-1 . Then, the value of N is: