Question:
The magnetic field in a travelling electromagnetic wave has a peak value of 20 nT. The peak value of electric field strength is
The magnetic field in a travelling electromagnetic wave has a peak value of 20 nT. The peak value of electric field strength is
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In EM waves, electric and magnetic fields are related by E=cB.
Updated On: Mar 17, 2026
- 3 V/m
- 6 V/m
- 9 V/m
- 12 V/m
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The Correct Option is C
Solution and Explanation
For an electromagnetic wave,
E₀ = cB₀
E₀ = 3×10⁸ × 20×10⁻⁹ = 6 V/m
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