A radio wave transmits 2.99 W/m² average power per unit area.What is the peak value of the associated magnetic field? (μ₀ = 4π × 10−⁷ T⋅m/A and c = 3.00 × 10⁸ m/s) A) 2.50E-14 T B) 4.75E+1 T C) 1.58E-7 T D) 9.98E-5 T E) 1.12E-7 T

Question

Quizplus · Accepted Answer

The peak value of the magnetic field can be calculated using the equation:

B0 = √(2μ0Pav/c)

where μ0 is the permeability of vacuum, Pav is the average power per unit area, and c is the speed of light.

Substituting the given values, we get:

B0 = √(2 x 4π x 10^-7 x 2.99 / 3.00 x 10^8)

B0 = 1.58 x 10^-7 T

Therefore, the correct answer is (C) 1.58E-7 T.

A Radio Wave Transmits 2