Page 38 - Basic Electrical Engineering
P. 38
Calculation of α at different temperatures
We have seen,
If α and α are the temperature coefficients of resistance at t and t degrees,
1
2
1
2
respectively, then
and
Thus, we can write,
α R = α R = α R = α R = … and so on
2
1
1
3
3
2
0
0
Therefore,
and, α R = α R 1
2
1
2
or,
