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Question: Answered & Verified by Expert
If $\overrightarrow{\mathrm{E}}$ and $\overrightarrow{\mathrm{K}}$ represent electric field and propagation vectors of the EM waves in vacuum, then magnetic field vector is given by: ( $\omega$ - angular frequency) :
PhysicsElectromagnetic WavesBITSATBITSAT 2023 (Memory Based Paper 2)
Options:
  • A $\frac{1}{\omega}(\overrightarrow{\mathrm{K}} \times \overrightarrow{\mathrm{E}})$
  • B $\omega(\overrightarrow{\mathrm{E}} \times \overrightarrow{\mathrm{K}})$
  • C $\omega(\overrightarrow{\mathrm{K}} \times \overrightarrow{\mathrm{E}})$
  • D $\overrightarrow{\mathrm{K}} \times \overrightarrow{\mathrm{E}}$
Solution:
2809 Upvotes Verified Answer
The correct answer is: $\frac{1}{\omega}(\overrightarrow{\mathrm{K}} \times \overrightarrow{\mathrm{E}})$
For an EM wave
$\overrightarrow{\mathrm{B}}=\frac{1}{\omega}(\overrightarrow{\mathrm{K}} \times \overrightarrow{\mathrm{E}})$

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