A cell on open circuit has e.m.f 2.0 V and in closed circuit having current of 0.05 A , the p.d is 1.5 V . Calculate internal resistance of the cell.

Explanation

To find the internal resistance of the cell, we can follow these steps:

### Step 1: Identify the given values
- EMF of the cell (E) = 2.0 V
- Potential difference (V) in closed circuit = 1.5 V
- Current (I) in the circuit = 0.05 A

### Step 2: Use the formula relating EMF, potential difference, current, and internal resistance
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