Electrical Conductors and Insulators
 

Electrical Conductors and Insulators problem 18


An electric soldering iron is used to melt solder, for joining wires in an electric circuit. A soldering iron is shown in the figure below:




Solder is a metal which melts easily. The heater coil inside the metal cylinder heats the copper tip.


  • suggest why the tip is made of copper


  • Suggest why the handle is made of plastic



 

main author and content editor: Odafe Adjeke