An electronic device designed to operate at any temperature in the range from −6.0°C to 65.4°C...
An electronic device designed to operate at any temperature in the range from −6.0°C to 65.4°C contains pure carbon resistors. What is the percent difference in resistance over this range? The temperature coefficient of resistivity for carbon is −0.500 ✕ 10-3/°C.
Homework Answers
Let T1 = -6 C
T2 = 65.4 C
alfa = 0.500*10^-3 C
we know, R = Ro + Ro*alfa*(T2 -T1)
R - Ro = Ro*alfa*(T2 - T1)
(R - Ro)/Ro = alfa*(T2 - T1)
the percent difference in resistance over this range = 100*(R - Ro)/Ro
= 100*alfa*(T2 - T1)
= 100*0.5*10^-3*(65.4 - (-6))
= 3.57 % <<<<<<<-----------Answer
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An electronic device designed to operate at any temperature in
the range from −6.0°C to 65.4°C...
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