Describe the reasons for the use of copper and (steel-cored) aluminium in cables, andwhy plastics and ceramics are used as insulators.Thank you so much ! :D
Electrical resistivity is a measure of how strongly a material opposes the flow of electric current A low resistivity indicates a material that readily allows the movement of electric charge Metals have the lowest Electrical resistivity Copper , Silver , Gold , Aluminum have the lowest resistivity Would you use Silver and Gold ? No , Why ? , Expensive Ceramics have very high electrical resistivity , They Highly resist flow of electron charges therefore they are insulators
