Question

If the resistivity of aluminum is 2.7×10 power -8ohm meter. What is the resistance of an aluminum cable of length 2.5Km and diameter 1.0 mm.

Answer 1

Answer:

85.987 ohms

Explanation:

resistance = resistivity x length / area

= 2.7 x 10^(-8) x 2500 / ( 3.14 x 0.0005^2)

=85.987 ohms

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