Question

The amplitudes of electric and magnetic fields related to each other are

• A. $E_0=B_0$
• B. $E_0=c{B}_0$
• C. $E_0=\frac{B_0}{c}$
• D. $E_0=\frac{c}{B_0}$

Answer 1

The correct option is B $E_0=c{B}_0$

$Answer:-$ B

Maxwell was able to establish that electromagnetic waves possess the following properties:

1. The magnetic field oscillates in phase with the electric field. In other words, a wave maximum of the magnetic field always coincides with a wave maximum of the electric field in both time and space.
   
2. 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 $E\times B$. Electromagnetic waves are clearly a type of transverse wave.
3. For a z-directed wave, the electric field is free to oscillate in any direction which lies in the x-y plane. The direction in which the electric field oscillates is conventionally termed the direction ofpolarization of the wave.
4. The maximum amplitudes of the electric and the magnetic fields are related via $E_0=c{B}_0$.

5. There is no constraint on the possible frequency or wavelength of electromagnetic waves. However, the propagation velocity of electromagnetic waves is fixed, and takes the value