At what temperature will aluminum have a resistivity that is two times the resistivity of iron at room temperature?
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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
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 given below
α=1/ρ*dρ/dt
where ρ is the resistivity at temperature T.
a) Assuming that α is constant, show that ρ equals the following expression where Po is the resistivity at temperature To.
b)using the series expansion ex = 1 + x for x « 1, show that the resistivity is given approximately by the expression ρ=p0[1 + α(T-TO)] .