When a potential difference of 2 volt is applied across the ends of a wire of 5 m length, a current of 1 A flows through it. Calculate :
the resistance per unit length of the wire,

Explanation

To solve the problem step by step, we will follow these instructions:

### Step 1: Understand the given information
We have a wire of length \( L = 5 \) meters, a potential difference \( V = 2 \) volts applied across it, and a current \( I = 1 \) ampere flowing through it.

### Step 2: Use Ohm's Law to find the resistance of the wire
Ohm's Law states that:
\[
...