An EM wave has amplitude of electric field `E_0` and amplitude of magnetic field is `B_0`. The electric field at some instant become `3/4 E_0`. What will be magnetic field at this instant? (Wave is travelling in vacuum).

Explanation

To solve the problem, we need to understand the relationship between the electric field (E) and the magnetic field (B) in an electromagnetic (EM) wave traveling in a vacuum. The key points to remember are:

1. The ratio of the amplitudes of the electric field (E₀) and the magnetic field (B₀) in an electromagnetic wave is given by the equation:
\[ \frac{E_0}{B_0} = c \]
where \(c\) is the speed of light in a vacuum.

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