OnlineCBT
Physics · Electrostatic Potential
हिन्दीGiven below are two statements: Statement I: Dielectric breakdown of an insulating medium occurs when the electric field exceeds its dielectric strength, rendering the medium conducting. Statement II: The dielectric strength of dry air at standard conditions is approximately \( 3 \times 10^4\text{ V}\cdot\text{m}^{-1} \). In the light of the above statements, choose the most appropriate answer from the options given below:
Correct answer · Option 3
Statement I is correct but Statement II is incorrect.
Explanation
Statement I is correct. Statement II is incorrect because the dielectric strength of air is about \( 3 \times 10^6\text{ V/m} \), not \( 3 \times 10^4\text{ V/m} \).
