The magnitude of the poynting vector of a planar electromagnetic wave has an average value of 0.724 w/m2. what is the maximum value of the magnetic field in the wave? (c = 3.0 x 108 m/s, μ0 = 4π × 10-7 t ∙ m/a, ε0 = 8.85 × 10-12 c2/n ∙ m2)

The maximum value of the magnetic field in the wave is .

Explanation:

Given that,

Average value of pointing vector = 0.724 W/m²

We need to calculate the magnetic field

Using formula of pointing vector

The average value of pointing vector

....(I)

We know that,

Put the value of in equation (II)

Put the value into the formula

Hence, The maximum value of the magnetic field in the wave is .

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