JEE Mains · Physics · STD 12 - 8. Electromagnetic waves
The energy associated with electric field is \((U_E)\) and with magnetic field is \((U_B)\) for an electromagnetic wave in free space. Then
- A \({U_E} = \frac{{{U_B}}}{2}\)
- B \(U_E\,>\,U_B\)
- C \(U_E\,<\,U_B\)
- D \(U_E\,=\,U_B\)
Answer & Solution
Correct Answer
(D) \(U_E\,=\,U_B\)
Step-by-step Solution
Detailed explanation
\(\mathrm{B}=\frac{\mathrm{E}}{\mathrm{C}}\) \(\Rightarrow \mathrm{U}_{\mathrm{E}}=\frac{1}{2} \varepsilon_{\mathrm{o}} \mathrm{E}^{2}\)…
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