The resistance R of a wire is given by the formula R = (L)/(A), where is the resistivity of the material, L is the length of the wire, and A is the cross-sectional area. For a

Step 1: Analyze the resistance of a copper wire (Question 36).
The resistance $R$ of a wire is given by the formula $R = \rho \frac{L}{A}$, where $\rho$ is the resistivity of the material, $L$ is the length of the wire, and $A$ is the cross-sectional area. For a wire with radius $r$, the cross-sectional area is $A = \pi r^2$.

• Statement 1: It is proportional to the radius of the wire. Substituting $A = \pi r^2$ into the resistance formula, we get $R = \rho \frac{L}{\pi r^2}$. This shows that $R$ is proportional to $\frac{