PHYSICS 182 Lecture 22: PHYS182 Lecture 22

A more general definition of the temperature coefficient of resistivity is

Where   is the resistivity at temperature T. 

a) Assuming   is constant, show that

Where   is the resistivity at temperature   .

b) Using the series expansion   for   , show that the resistivity is given approximately by the expression

  for  

A more general definition of the temperature coefficient of resistivity is:

where is the resistivity at temperature T

a. Assuming that is constant, show that

where is the resistivity at temperature  

b. Using the series expansion for , show that resistivity is given approximately by the expression

At what temperature will aluminum have a resistivity that is two times the resistivity of iron at room temperature?