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A plane electromagnetic wave of frequency 35 MHz travels in free space along the X-direction. At a particular point (in space and time) j ˆ 6 . 9 E = r V/m. The value of magnetic field at this point is :

1. T j ˆ 6 . 9
2. T k ˆ 10 6 . 9 8 – ×
3. T i ˆ 10 2 . 3 8 – ×
4. T k ˆ 10 2 . 3 8 – ×

Correct answer: T k ˆ 10 2 . 3 8 – ×

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