If aluminium and copper wires of same length have the same resistance, aluminium has the larger diameter and area.
Explanation:
•	Resistance of any material is given as:
•	 R=L/ρA 
where R is the resistance of material, A is the cross sectional area, L is the length of material and ρ is the resistivity of material.
•	Now, resistance and length is same, so the area will depend on the resistivity of the material.
•	Area(A)  ∝  resistivity  (ρ)
•	Resistivity of copper  =1.68*10^-8 ohm - m
•	Resistivity of aluminium =2.65*10^-8 ohm - m
Since, resistivity of aluminium is higher than resistivity of copper so the area and diameter is higher for aluminium.

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