Question

Numerical-2
An aluminium wire 7.5 m long is connected in a parallel with a copper
wire 6 m long. When a current of 5 A is passed through the
combination, it is found that the current in the aluminium wire is 3 A.
The diameter of the aluminium wire is 1 mm. Determine the diameter
of the copper wire. Resistivity of copper is 0.017 u 12-m that of the
aluminium is 0.028 u12-m.

Answer 1

Answer:

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