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Why magnetic and electric feild are perpendicular to each other ?
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Answers
The electric field is always perpendicular to the magnetic field, and both fields are directed at right-angles to the direction of propagation of the wave. In fact, the wave propagates in the direction . Electromagnetic waves are clearly a type of transverse wave.
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Answer :-
This comes from maxwell's equations. You can substitute a plane wave solution into the divergence equations and find that k(wave vector) and D are. perpendicular as k and B. Then there are the curl equations. One curl equation states that if the electric field tends to rotate, it will induce a magnetic field at the center of the rotation and in the direction perpendicular to the rotation.
The other curl equation states the opposite, that the electric field will be induced at the center of rotation of a magnetic field. The curl equations put electric and magnetic fields perpendicular to each other. Now u have electric and magnetic fields perpendicular to k, and perpendicular to each other.