What is temperature coefficient of resistance of the material of conductor ?

A wrie has a resistance of 7.5 Omega at 22^@C and 15.7 Omega at 175^@C . Determne the temperature coefficient of resistance of the material.

Calcualte the temperature at which the resistance of a conductor becomes 20% more than its resistance at 27^@C . The value of the temperature coefficient of resistance of the conductor is 2.0 xx 10^-4 K^-1

Name any one material having a small value of temperature coefficient of resistance. Write one use of this material.

At 0^(@)C the resistance of conductor of a conductor B is n times that of condoctor A temperature coefficient of resistance for A and B are alpha_(1) and alpha_(2) respectively the temperature coefficient of resistance of a circiut segment constant A and B in series

What is temperature coefficient of a reaction ? Why temperature coefficient for most of the reactions at room temperature is nearly two ?

Which material is best conductor?