An aluminum wire is 5.87 m long and has a diameter of 6.07 mm.

Aluminum has a resistivity of 2.82x10-8 Ohm-meters. What is the

resistance of this wire?

Answer: 5.72 x 10-3Ω

Explanation:

Hi, to answer this question, first we have to calculate the cross sectional area of the cable:

Diameter (D) = 6.07 mm

Since: 1000mm = 1m

6.07mm / 1000mm/m = 0.00607 meters

Area of a circle : π (d/2) ^2

A = π (0.00607/2) ^2 = 0.000028937 m2

Resistance formula:

Resistance (R) = P (resistivity) L (length) : A (cross sectional area)

Replacing with the values given:

R = (2.82x10-8 x 5.87) / 0.000028937

R = 5.72 x 10-3Ω

Feel free to ask for more if needed or if you did not understand something.