An electromagnetic wave with a peak magnetic field component of 3.20 × 10−7 T carries what average power per unit area? (μ0 = 4π × 10−7 T⋅m/A, ε0 = 8.85 × 10−12 C2/N⋅m2 and c = 3.00 × 108 m/s)

Explanation:

Average power per unit area =

I avg = c B₀² / 2μ₀

= 3 X 10⁸ X (3.2 X 10⁻⁷)² / 2 X 4π × 10⁻⁷

= 1.22 X 10

12 . 2 W / m²

The average power per unit area is 12.22 W/m²

Explanation:

Given that,

Peak magnetic field

We need to calculate the peak electric field

Using formula of electric filed

Put the value into the formula

We need to calculate the average power per unit area

Using formula of average power

Put the value into the formula

Hence, The average power per unit area is 12.22 W/m²

answer and explanation;