Question: A 4 0 0 - m long, 0 . 1 5 mm radius copper wire is coated with a thin insulating material. An engineer decides

A 400-m long, 0.15 mm radius copper wire is coated with a thin insulating material. An engineer decides to use it for designing a temperature sensor for the range of 10C to 20C. A 1.5-V battery is used to bias the sensor.
Determine the resistance of the sensor and corresponding current at the two extremes of the sensor.
Determine the maximum power that the sensor will dissipate.
Assume that the conductivity of copper is 5.8107 S/m at 20C and its temperature coefficient is 0.0039/(C).

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