Questions
In an electromagnetic wave in vacuum, the electric and magnetic fields are and . The poynting vector is
detailed solution
Correct option is D
Poynting vector is S→=E→×B→μ0Magnitude of Poynting vector is S=EBμ0 [E→ and B→ are perpendicular to each other] ⇒S=40π×0.4×10−74π×10−7=4.0 Wm−2Talk to our academic expert!
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In an electromagnetic wave, the electric and magnetising fields are and . The maximum energy flow is
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