
12 Circuit calculations pocket book
10 PRINT "PROG 10"
20 PRINT "THIS PROGRAM COMPUTES TEMPERATURE COEFFICIENT"
30 INPUT "ENTER INITIAL TEMPERATURE" ; Tl
40 INPUT "ENTER RESISTANCE AT Tl" ; Rl
50 INPUT "ENTER FINAL TEMPERATURE" ; T2
60 INPUT "ENTER RESISTANCE AT T2" ; R2
70 LET A=(R2-R1)/(R1*T2-R1*T1)
80 PRINT "TEMPERATURE COEFFICIENT = " A "PER DEGREE C"
Example 11 The resistance of an aluminium conductor increases
from 3 O to 3.2 ft when heated. If the initial temperature was 20°C,
calculate the final temperature given that the coefficient of res-
istance of aluminium is 0.004/°C at 20°C.
R
2
~ R
x
T
2
=
~ - + T
x
R
x
a
x
3.2 - 3
+ 20
3 x 0.004