Q: 2m long coilednichrom wire (nichrom wire spring) the spring has length of 1m and 7.2 mm outer diameter the wire has thickness of 0.56 mm. You are required to determine the current and the voltage and the power to heat the spring to 100 C degrees. And how long it will take to reach that temperature assuming no heat lost in the process and comments on your results?
You may research the properties of nichrom wire to determine the resistivity of the wire.