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Physics · Electrostatic Potential
हिन्दीGiven below are two statements: Statement I: The formula for electrostatic energy density \( u = \frac{1}{2} \varepsilon_0 E^2 \) is valid only for the uniform electric field between the plates of a parallel plate capacitor. Statement II: The permittivity of a dielectric medium is always smaller than the permittivity of free space. In the light of the above statements, choose the most appropriate answer from the options given below:
Correct answer · Option 2
Both Statement I and Statement II are incorrect.
Explanation
Statement I is incorrect: \( u = \frac{1}{2}\varepsilon_0 E^2 \) is completely general for any arbitrary electrostatic field configuration. Statement II is incorrect: \( \varepsilon = \varepsilon_0 K \) and since \( K > 1 \), \( \varepsilon > \varepsilon_0 \).
