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MHT CET 2019 (3 May, Shift 1) · Electric Flux & Gauss's Law

Electric Flux & Gauss's Law question from MHT CET 2019 (3 May, Shift 1)

Q103MHT CET 2019 · 3 MAY · SHIFT 1Medium

Electric Flux & Gauss's Law

A charged conductor produces an electric field of intensity $10^{3}\text{ V/m}$ just outside its surface in vacuum. Then, it produces the electric field of intensity E just outside its surface, when it is placed in a medium of dielectric constant 4. The value of $E$ will be

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Answer: (c)

Just outside a conductor, $E = \frac{\sigma}{K\varepsilon_0}$ ; for the same charge, $E \propto \frac{1}{K}$ .
$E = \frac{10^3}{4} = 250$ V/m
So the answer is (c) 250 V/m.

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