Question

The electrical breakdown in air occurs at electric field strength of 3.5MV m−1. Calculate the corresponding intensity of a plane wave

Answer 1

very tough question hard to answer

Answer 2

Answer:

1.63 x 10¹⁰ W/m²

Explanation:

I = c . E₀ . E² / 2  . . .  (1)

c = 3 x 10⁸ m/s

E₀ = 8.85 x 10⁻¹²  F/m

E = 3.5 x 10⁶ V/m

Substituting in (1) we get,

I = 3 x 10⁸ . 8.85 x 10⁻¹² . 3.5 x 10⁶ / 2

I = 1.63 x 10¹⁰ W/m²