AP EAMCET · PHYSICS · Electromagnetic Waves
An electromagnetic wave of frequency \(45 \mathrm{MHz}\) travels in free space along \(X\)-axis. At some point and at some instant, the electric field has a maximum value of \(750 \mathrm{NC}^{-1}\) along \(Y\)-axis. The magnetic field at this position and time is
- A \(2.5 \times 10^{-6} \hat{\mathbf{j}}\)
- B \(5 \times 10^{-6} \hat{\mathbf{k}} \mathrm{T}\)
- C \(2.5 \times 10^{-6} \hat{\mathbf{k}} \mathrm{T}\)
- D \(2.5 \times 10^{-6} \hat{\mathbf{i}} \mathrm{T}\)
Answer & Solution
Correct Answer
(C) \(2.5 \times 10^{-6} \hat{\mathbf{k}} \mathrm{T}\)
Step-by-step Solution
Detailed explanation
Relation between electric and magnetic field in electromagnetic wave \(\begin{aligned} & B=\frac{E}{c} \\ & E=750 \mathrm{~N} / \mathrm{C} \end{aligned}\) Speed of light,…
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