Verified Solution • 2025–26 Session moderate

QPages 330-331: Q6: HC Verma: Concepts of Physics - Volume 2 Alternating Current Pages 330-331: Q6 Solution: The dielectric strength of air is . A parallel-plate…

The dielectric strength of air is

3.0 \times 10^6 \text{ V/m}

. A parallel-plate air-capacitor has area

20 \text{ cm}^2

and plate separation 0.10 mm. Find the maximum rms voltage of an AC source that can be safely connected to this capacitor.

Step-by-Step Verified Solution

**Answer:**

V_{rms} \approx 212 \, \text{V}

. **Step-by-Step Explanation:** Maximum voltage

V_0 = E \times d = 3 \times 10^6 \times 0.1 \times 10^{-3} = 300 \, \text{V}

.

V_{rms} = \frac{V_0}{\sqrt{2}} \approx 212 \, \text{V}

[citation:6].

All Questions in this Chapter

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