For electromagnetic waves, E₀/B₀ = c, where c is the speed of light in vacuum (3 × 10⁸ m/s).
Back to JEE Main 2020 Electromagnetism
JEE Main 2020 — Physics Electromagnetism
easy
mcq
2020
Official previous-year question
Verified 30 May 2026.
Question
An electromagnetic wave has electric field amplitude E₀ and magnetic field amplitude B₀. The ratio E₀/B₀ is equal to:
Options
- Ac (speed of light)
- B1/c
- Cc²
- D√c
Solution
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