Q. In an electromagnetic wave, the average energy density associated with magnetic field is

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A

$L i_{0}^{2} / d^{2}$

9%

B

$B^{2} /2 μ_{0}$

62%

C

$μ_{0} B^{2} /2$

21%

D

$μ_{0} /2 B^{2}$

9%

Solution:

$E_{mag.} = \frac{B ^{2}}{2 μ _{0}}$