Some electrical appliances are used with long cables to connect to them to the electrical supply. State and explain 2 reasons why these cables should have a low resistance per unit length.
The Attempt at a Solution
well for the long cables, a low resistance per unit length would mean a low resistance for the cable itself. a larger current will flow.
i cannot see any advantage in that. rather the cables will be less safe with a larger current. the power dissipated, I2R, will be larger, hence less efficient.
so i don't know....