2. A copper wire Sm long is connected in parallel with an aluminum wire of 10m long. When a current of
10A is passed through the combination, it is found that the current in the aluminum is 6A. if the diameter of
the aluminum is 2mm, determine the diameter of the copper wire. Resistivity of the copper is 0.0182 m
and that of aluamimim is 0.028 µm
