In an electromagnetic wave, the electric and magnetic fields are $100 V / m$ and $0.265 A / m$ . The maximum energy flow is:

26.5 W / m^{2}

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36.5 W / m^{2}

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46.7 W / m^{2}

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765 W / m^{2}

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Solution

The correct option is B $26.5 W / m^{2}$
Here, amplitude of electric field, $E_{0} = 100 V / m$ ; amplitude of magnetic field, $H_{0} = 0.265 A / m$ . We know that the maximum rate of energy flow,
$S = E_{0} \times H_{0} = 100 \times 0.265 = 26.5 W / m^{2}$ .

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Similar questions

In an electromagnetic wave, the electric and magnetising fields are 100V $m^{- 1}$ and 0.265 $A m^{- 1}$ . The maximum energy flow is

100 V m^{- 1}

0.265 A m

1 \times 10^{14}

4 V / m

\in_{0} = 8.8 \times 10^{- 12} C^{2} / N - m^{2}

1 \times 10^{14} Hz

4 V/m

ϵ_{0} = 8.8 \times 10^{- 12} C^{2} {/N-m}^{2}

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