Question:
The amplitudes \(E_0\) and \(B_0\) of electric and magnetic components of an electromagnetic wave respectively are related to the velocity \(c\) in vacuum as
The amplitudes \(E_0\) and \(B_0\) of electric and magnetic components of an electromagnetic wave respectively are related to the velocity \(c\) in vacuum as
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In EM waves, electric field is always \(c\) times magnetic field.
Updated On: May 8, 2026
- \(E_0 B_0 = \frac{1}{c}\)
- \(E_0 = \frac{c}{B_0}\)
- \(B_0 = cE_0\)
- \(E_0 = cB_0\)
- \(E_0 = c^2 B_0\)
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The Correct Option is D
Solution and Explanation
Concept:
In electromagnetic waves:
\[
E = cB
\]
Step 1: Relation between fields.
Electric and magnetic fields are related by speed of light: \[ c = \frac{E}{B} \]
Step 2: Rearrange equation. \[ E = cB \]
Step 3: Apply for amplitudes. \[ E_0 = cB_0 \]
Step 4: Final conclusion. \[ \boxed{E_0 = cB_0} \]
Step 1: Relation between fields.
Electric and magnetic fields are related by speed of light: \[ c = \frac{E}{B} \]
Step 2: Rearrange equation. \[ E = cB \]
Step 3: Apply for amplitudes. \[ E_0 = cB_0 \]
Step 4: Final conclusion. \[ \boxed{E_0 = cB_0} \]
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