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A parallel plate capacitor is partially filled with glass of dielectric constant 4.0 as shown below. The dielectric strengths of air and glass are 30 kV/cm and 300 kV/cm, respectively. The maximum voltage (in kilovolts), which can be applied across the capacitor without any breakdown, is _______.
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- 18.75
- 1.75
- 1875
- 1.825
Correct Option: A
| C1 = | ||
| d |
| C2 = | ||
| d |
| Ceq = | = | |||
| C1 + C2 | 5d |
| Dn = ρs = | = | = | |||
| A | A | A |
| Dn = | V | |
| 5dA |
| Dn = |  |  | V | |
| 5dA |
| E1 = | = | V | ||
| ∈0 | 5d |
| 30 × 105 = | ||
| 4d |
| ⇒ V = | = 18.75 kV | |
| 4 |
