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.In an electromagnetic wave in free space the root mean square value of the electric field is Erms = 6V/m. The peak value of the magnetic field is :-
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- 2.83 × 10–8 T
- 0.70 × 10–8 T
- 4.23 × 10–8 T
- 1.41 × 10–8 T
Correct Option: A
Given, Erms = 6 V/m
| = c | ||
| Brms |
| ⇒ Brms = | .....(i) | |
| c |
| Brms = | ||
| √2 |
⇒ B0 √2Brms
| B0 = √2 × | ||
| C |
From equation (i)
| = | = 2.83 × 10-8 T | |
| 3 × 108 |
