Two wires of the same material and same length have radii 1 mm and 2 mm respectively. Compare :
their resistances,

Explanation

To compare the resistances of two wires made of the same material and having the same length but different radii, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Formula for Resistance**:
The resistance \( R \) of a wire is given by the formula:
\[
R = \frac{\rho L}{A}
...