Q. Gauss's law is applicable in which medium?

गॉस का नियम किस माध्यम में लागू होता है?

A
Only air
केवल हवा
B
Only metals
केवल धातुएँ
C
Any medium
कोई भी माध्यम
D
Only vacuum
केवल निर्वात

Explanation

Gauss’s Law is universally valid, but the form changes depending on the medium:

  • In vacuum: ε=ε0

  • In other materials: ε=εrε0\varepsilon = \varepsilon_r \varepsilon_0

So, it applies to air, vacuum, conductors, and dielectrics.

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