4. A copper wire has a length of 3500 ft and having an area of 144 cm squared. Find the resistance of the copper conductor at a temperature of 43ºC. 5. The power taken by a resistive coil made of...

Extracted text: 4. A copper wire has a length of 3500 ft and having an area of 144 cm squared. Find the resistance of the copper conductor at a temperature of 43ºC. 5. The power taken by a resistive coil made of copper wire is 1200W at 120V and 15 °C. Calculate the power consumed by the coil when connected at 250V and 110°C. The temperature coefficient at 27 °C is 0.00393 °C-1.