A parallel plate capacitor is maintained at a certain potential difference. When a 3mm thick slab is introduced between the plates, in a order to maintain the same potential difference, the distance between the plates is increased by 2.4 mm. Find the dielectric constant of the slab.

Explanation

To find the dielectric constant of the slab introduced between the plates of a parallel plate capacitor, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Given Values:**
- Thickness of the slab, \( t = 3 \, \text{mm} = 0.003 \, \text{m} \)
- Increase in the distance between the plates, \( d' = 2.4 \, \text{mm} = 0.0024 \, \text{m} \)

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