Question

where p and Pare the values of resistivity at temperatures Tar
coeficient of resistivity.
P-Po dp 1
Clearly,
Po (
TT) Pod
Thus temperature coefficient of electrical resistivity is
electrical resistivity (dp/po) per unit change in temper
For metals. The value of a is positive, showing that their
temperature
For many metallic conductors, the value of a is nearly 4
temperature dependence of p at low temperature is non-linear
pure metal increases as a higher power of temperature. The var
temperature T is shown in Fig. 3.13(a).
For alloys, the resistivity is high. The resistivity of nichrome
has weak temperature dependence as shown in Fig. 3.13/h)
of temperature. Fie​

Answer 1

Answer:

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