A potential barrier of 0.3V exists across a P-N junction (a) If the depletion region is 1 `mum` wide, what is the intensity of electric field in this region ?

Explanation

To find the intensity of the electric field in the depletion region of a P-N junction, we can use the formula for electric field (E) in terms of potential difference (V) and distance (D):

### Step-by-Step Solution:

1. **Identify the given values:**
- Potential barrier (V) = 0.3 V
- Width of the depletion region (D) = 1 µm = 1 × 10⁻⁶ m

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