Question

Aluminum, copper-clad aluminum, or copper wires may be connected in parallel if they are of what size or larger?

a) Equal size
b) Smaller size
c) Larger size
d) No specific size required

Answer 1

If aluminum and copper wires have the same length resistance, the copper wire will have a larger diameter due to its lower resistivity.

Step-by-step explanation:

If aluminum and copper wires of the same length have the same resistance, the copper wire will have a larger diameter compared to the aluminum wire. This is because copper has a lower resistivity than aluminum. Since the resistance of a wire is directly proportional to its resistivity and length, and inversely proportional to its cross-sectional area, a wire with a larger diameter will have a lower resistance.