Share of energy between the electric and magnetic fields of an EM wave

1. A.
   $U_{e} = U_{m}$
2. B.
   $U_{e} > U_{m}$
3. C.
   $U_{e} < U_{m}$
4. D.
   $U_{e} \neq U_{m}$

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1. A.
   3
2. B.
   $\frac{1}{2}$
3. C.
   1
4. D.
   2

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1. A.
   $U_{E} = \frac{E^{2}}{2\epsilon_{0}},U_{B} = \frac{B^{2}}{2\mu_{0}}$
2. B.
   $U_{E} = \frac{E^{2}}{2\epsilon_{0}},U_{B} = \frac{\mu_{0}{\text{ }B}^{2}}{2}$
3. C.
   $U_{E} = \frac{\in_{0}E^{2}}{2},U_{B} = \frac{\mu_{0}{\text{ }B}^{2}}{2}$
4. D.
   $U_{E} = \frac{\in_{0}E^{2}}{2},U_{B} = \frac{B^{2}}{2\mu_{0}}$

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1. A.
   1
2. B.
   $1/2$
3. C.
   2
4. D.
   4

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