State Ohm' law and deduce it from the knowledge of drift velocity of free electrons in a conductor carrying current.

Explanation

### Step-by-Step Solution

**Step 1: State Ohm's Law**
Ohm's Law states that the current (I) flowing through a conductor between two points is directly proportional to the voltage (V) across the two points, provided the temperature remains constant. Mathematically, it can be expressed as:
\[ V = I \cdot R \]
where R is the resistance of the conductor.
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