A cell of emf 'E' and internal resistance 'r' draws a current 'I'. Write the relation between terminal voltage 'V' in terms of E, I and r.

Explanation

To derive the relation between terminal voltage \( V \), electromotive force (emf) \( E \), current \( I \), and internal resistance \( r \) of a cell, we can follow these steps:

### Step-by-step Solution:

1. **Understand the Components**:
- Let \( E \) be the emf of the cell.
- Let \( r \) be the internal resistance of the cell.
- Let \( I \) be the current flowing through the circuit.
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