Define 1 ohm resistance.
A student has a resistance wire of 1 ohm. If the length of this wire is 50 cm, to what
length he should stretch it uniformly so as to obtain a wire of ` 4 Omega` resistance? Justify
your answer .

Explanation

### Step-by-Step Solution

**Step 1: Define 1 Ohm Resistance**
1 Ohm resistance is defined as the resistance of a conductor when a potential difference of 1 volt across it causes a current of 1 ampere to flow through it. Mathematically, this can be expressed using Ohm's Law:
\[ R = \frac{V}{I} \]
Where:
- \( R \) is the resistance in ohms (Ω),
- \( V \) is the potential difference in volts (V),
...