An aluminum wire has a length of 22.0 m and a resistance of 3.10 Ω at 20.0C⁰. Assuming a circular cross-section, what is the wire's diameter in mm? The resistivity of aluminum at 20.0C⁰
a Calculate the cross-sectional area of the wire.
b Determine the diameter of the wire.
c Discuss how changes in temperature would affect the wire's resistance.
d Compare the resistivity of aluminum with other common conductors.