Question

the dielectric constant k of an insulator can b?
(a) -1 (b) 0 (c) 0.2 (d) 5

Answer 1

Answer:5

Explanation:

Answer 2

Answer:

The correct answer is (d) 5.

Explanation:

The dielectric constant of plastic or dielectric or insulating material can be defined as the percentage of the charge reserved in an insulating material positioned between two metallic plates to the charge that can be stored when the insulating material is substituted by vacuum or air. It is also named electric permittivity or simply permittivity.

Dielectric constant $(k)$ is represented as the ratio of the electric permeability of the material to the electric permeability of the free area.

$k=\frac{\varepsilon}{\varepsilon_{0}}$

The value of the dielectric constant for vacuum stands at 1. For insulators, it's always greater than or equal to 1.

Hence, option (d) 5 is correct.

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