Potential difference across the terminal of `alpha` battery drops by 1 V when `alpha` current of 1 A is drawn from its positive terminal by connecting it to `alpha` circuit . What is the internal resistacne of the battery ?

Explanation

To find the internal resistance of the battery, we can use the information provided in the question. Here’s a step-by-step solution:

### Step 1: Understand the relationship between EMF, potential difference, and internal resistance.
The electromotive force (EMF) of the battery (E) can be expressed as:
\[ E = V + I \cdot r \]
where:
- \( V \) is the potential difference across the terminals,
- \( I \) is the current drawn from the battery,
...