Question

he energy flow per unit time per unit area (S) of an electromagnetic wave has an average value of 601 mW/ m2. What is the maximum value of the magnetic field in the wave?

Answer 1

The maximum value of the magnetic field in the wave is approximately 0.134 T.

Step-by-step explanation:

To find the maximum value of the magnetic field in the wave, we can use the relationship between the electric field (E), the magnetic field (B), and the speed of light (c): B = E/c. In this case, we are given the average power density (S) of the wave, which is 601 mW/m². The power density is related to the electric field by the equation S = (1/2)cεE², where ε is the permittivity of free space. From this equation, we can solve for E by rearranging the equation as E = sqrt(2S/(cε)). Plugging in the given values, we get E ≈ 40.42 V/m. Finally, substituting this value of E into the equation B = E/c, we find the maximum value of the magnetic field to be B ≈ 0.134 T (tesla).

Answer 2

The question does not provide enough information to determine the maximum value of the magnetic field in the electromagnetic wave.

Step-by-step explanation:

In an electromagnetic wave, the energy flow per unit time per unit area, known as the intensity (S), is given as an average value of 601 mW/m2. To find the maximum value of the magnetic field in the wave, we can use the relationship between the magnetic field strength (B) and the electric field strength (E), given by B = E/c, where c is the speed of light. As the question does not provide the electric field strength, we cannot determine the maximum value of the magnetic field.