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The permeability and permittivity of air or free space is unity. State true/false.

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in Electromagnetic Theory by (188k points)
The permeability and permittivity of air or free space is unity. State true/false.

(a) True

(b) False

The question was asked during an online exam.

This intriguing question originated from Magnetostatic Properties in chapter Magnetostics of Electromagnetic Theory

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Right option is (b) False

Easy explanation: The permeability and permittivity of free space or air is always unity. This implies that the air is always ready to store electric or magnetic charges subjected to it.

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