Question

Asked Dec 19, 2019

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An engineer needs a resistor with a zero overall temperature

coefficient of resistance at *20.0°C*. She designs a pair of circular

cylinders, one of carbon and one of Nichrome as shown in

Figure P17.32. The device must have an overall resistance of*R _{1} + R_{2} = 10.0 Ω* independent of temperature and a uniform

radius of

and assume both are always at the same temperature.

(a) Can she meet the design goal with this method? (b) If so,

state what you can determine about the lengths L

each segment. If not, explain.

Step 1

part A:

Step 2

Step 3

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