Response to the following problem:
a. Find the resistance of the thermistor having the characteristics of Fig. at -50°C, 50°C, and 200°C. Note that it is a log scale. If necessary, consult a reference with an expanded log scale.
b. Does the thermistor have a positive or a negative temperature coefficient?
c. Is the coefficient a fixed value for the range -100°C to 400°C? Why?
d. What is the approximate rate of change of r with temperature at 100°C?