Final answer:
The current flow calculation in two wires with different cross-sectional areas follows Ohm's Law and depends on the resistivity of the material.
Step-by-step explanation:
The calculation of current flow in two wires with different cross-sectional areas follows Ohm's Law and depends on the resistivity of the material. Ohm's Law states that the current flowing through a conductor is proportional to the voltage drop across it. Therefore, if the voltage applied remains constant, the wire with a larger cross-sectional area will have a higher current flow compared to the wire with a smaller cross-sectional area. This is because the larger cross-sectional area offers less resistance to the flow of charge, allowing more current to pass through.
On the other hand, the resistivity of the material affects the current flow as well. Resistivity is a measure of how much a material resists the flow of electric current. Materials with higher resistivity will have higher resistance to the flow of charge and therefore lower current flow, even if the cross-sectional area is the same.