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The dielectric strength of air is about
A3 × 10⁴ V/m
B3 × 10³ V/m
C3 × 10⁸ V/m
D3 × 10⁶ V/m
Answer & Solution
Correct answer: D. 3 × 10⁶ V/m
Air breaks down as an insulator at a field of roughly 3 × 10⁶ V/m.
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