Problem: A copper bar 12 mm in diameter is insulated with micanite tube which fits tightly around the bar and into the rotor slot of an induction motor. The micanite tube is 1.5 mm thick and its thermal resistivity is 8 m. calculate the loss that will pass from copper bar if a temperature difference of 250C is maintained between them. The length of the bar is 0.2 m. Provide justifications and citations for your responses.