MCQ
The direction of poynting vector represents
- AThe direction of electric field
- BThe direction of magnetic field
- ✓The direction of propagation of $EM$ wave
- DThe direction opposite to the propagation of $EM$ wave
✓
Answer
Correct option: C.
The direction of propagation of $EM$ wave
c
(c)
(c)
$\bar{S}=\frac{\vec{E} \times \bar{B}}{\mu_0}$
$\vec{E} \times \vec{B} \Rightarrow$ direction of wave propagation
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