A plane electromagnetic wave of frequency `25 Mhz` travels in free space along the x-direction. At a particular point in space and time, `E= (6.3 j) V//m`. What is `B` at this point?

Explanation

To find the magnetic field \( B \) at the given point in space and time for the electromagnetic wave, we can follow these steps:

### Step 1: Identify the given values
- Frequency of the wave, \( f = 25 \text{ MHz} = 25 \times 10^6 \text{ Hz} \)
- Electric field, \( E = 6.3 \, \hat{j} \, \text{V/m} \)
- Speed of light in free space, \( c = 3 \times 10^8 \text{ m/s} \)

### Step 2: Determine the relationship between \( E \) and \( B \)
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