The direction of magnetic field in an electromagnetic wave is:
Correct answer: B. Perpendicular to the electric field
- A. Parallel to the electric field
- B. Perpendicular to the electric field
- C. At an angle of 60o with the electric field
- D. None of these
Explanation
In an electromagnetic wave, the direction of the magnetic field is perpendicular to the direction of the electric field and both are perpendicular to the direction of propagation.When an electromagnetic wave travels through space, it has two components that oscillate perpendicular to each other and to the direction of wave propagation:- The electric field oscillates in one plane.- The magnetic field oscillates in a plane perpendicular to the electric field.These fields are at right angles to each other and to the direction in which the wave is moving, forming a transverse wave. This relationship between the electric and magnetic fields defines the polarization and propagation characteristics of electromagnetic waves.
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