OnlineCBT
Physics · Electrostatic Potential
हिन्दीThe dielectric strength of dry air is approximately \( 3 \times 10^6\text{ V}\cdot\text{m}^{-1} \). The maximum potential difference that can be maintained between two parallel plates separated by an air gap of \( 2\text{ mm} \) without dielectric breakdown is:
Correct answer · Option 2
\( 6\text{ kV} \)
Explanation
\( V_{\max} = E_{\max} d = (3 \times 10^6\text{ V/m}) \times (2 \times 10^{-3}\text{ m}) = 6 \times 10^3\text{ V} = 6\text{ kV} \).
