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clc();
clear;
// to calculate the maximum temperature inside the coil when current was 2.5 amp
// the ratio of radii 12/13.5 is so great that the curvature may be neglected
Di= 10/12; // inside diameter of the coil in ft
x=7/48; // thickness of coil in ft
ts=70.5; // Initial temp. of coil in degF
Rm=12.1; // Resistance of coil
e=0.0024; // Temperature coefficient of coil in degF
i=0.009; // Initial current in amp
V=0.1; // Initial Voltage in volts
Rs=V/i; // Initial resistance in ohms
Thm=(Rm/Rs-1)/e; // Mean temperature in degF
Th0=1.5*Thm; // Increase in temperature in degF
to=ts+Th0; // Maximum temperature in degF
printf("The maximum temperature of the coil was %.1f degF",to);
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