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If \mathrm{\mathrm{E} \: and \: \mathrm{B}} represent electric and magnetic field vectors of the electromagnetic wave, then the direction of propagation of electromagnetic wave is along:
 

Option: 1

\mathrm{E}


Option: 2

\mathrm{B}


Option: 3

\mathrm{B \times E}


Option: 4

\mathrm{E \times B}


Answers (1)

best_answer

The direction of propagation of electromagnetic wave is perpendicular to both electric field vector \mathrm{E} and magnetic field vector B, i.e. in the direction of \mathrm{\mathrm{E} \times \mathrm{B}}. This can be seen the diagram given below:


Here, electromagnetic wave is along the z-direction which is given by the cross product of \mathrm{\mathrm{E} \: and \: \mathrm{B}}

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