Question

The dielectric strength of tge air is about ________.

(A) 3×10^6 v/m
(B) 3×10^4 v/m
(C) 3×10^2 v/m
(D) 3×10^3 v/m
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Answer 1

Explanation:

approximately 3 kV/mm

The dielectric strength of air is approximately 3 kV/mm. Its exact value varies with the shape and size of the electrodes and increases with the pressure of the air.