1.

(a) Give two examples of substances which are good conductors of electricity. Why do you think they are good conductors of electricity? (b) Calculate the resistance of a copper wire 1.0 km long and 0.50 mm diameter if the resistivity of copper is 1.7×10−8Ωm.

Answer»

(a) Give two examples of substances which are good conductors of electricity. Why do you think they are good conductors of electricity?
(b) Calculate the resistance of a copper wire 1.0 km long and 0.50 mm diameter if the resistivity of copper is 1.7×108Ωm.



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