Question:medium
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
Show Hint
In EM waves, electric field is always \(c\) times magnetic field.
Updated On: Jul 5, 2026
- \(E_0 B_0 = \frac{1}{c}\)
- \(E_0 = \frac{c}{B_0}\)
- \(B_0 = cE_0\)
- \(E_0 = cB_0\)
- \(E_0 = c^2 B_0\)
Show Solution
The Correct Option is D
Solution and Explanation
Understanding the 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 Final Answer. \[ \boxed{E_0 = cB_0} \]
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 Final Answer. \[ \boxed{E_0 = cB_0} \]
Was this answer helpful?
0
Top Questions on Electromagnetic Spectrum
- The given diagram exhibits the relationship between the wavelength of the electromagnetic waves and the energy of photons associated with them. The three points P, Q, and R marked on the diagram may correspond respectively to:
- CBSE Class XII - 2025
- Physics
- Electromagnetic Spectrum
- The minimum wavelength of Lyman series lines is \( P \), then the maximum wavelength of the Lyman series lines is:
- WBJEE - 2025
- Physics
- Electromagnetic Spectrum
- Arrange the following in the ascending order of wavelength:
(A) Gamma rays (\( \lambda_1 \))
(B) X-ray (\( \lambda_2 \))
(C) Infrared waves (\( \lambda_3 \))
(D) Microwaves (\( \lambda_4 \))
Choose the most appropriate answer from the options given below:- JEE Main - 2024
- Physics
- Electromagnetic Spectrum
- Match List-I with List-II
\[\begin{array}{|l|l|} \hline \text{List-I (Electromagnetic waves)} & \text{List-II (Wavelength range)} \\ \hline \text{(A) X-rays} & \text{(I) 1mm to 700 nm} \\ \hline \text{(B) Radio waves} & \text{(II) 0.1m to 1 mm} \\ \hline \text{(C) Infrared waves} & \text{(III) 1nm to \(10^{-3}\) nm} \\ \hline \text{(D) Microwaves} & \text{(IV) > 0.1 m} \\ \hline \end{array}\]
Choose the correct answer from the options given below:- CUET (UG) - 2025
- Physics
- Electromagnetic Spectrum
- Want to practice more? Try solving extra ecology questions todayView All Questions
