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In a region of free space during the propagation of electromagnetic wave, the electric field at some instant of time t is $\vec{E} = 90 \hat{i} N / C$ and the magnetic field is $\bar{B} = 0.08 \hat{ȷ} μ_{0} T$ The poynting vector for these fields at that point is

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detailed solution

Correct option is B

S¯=1μ0[E¯×B¯]=1μ090i^×0.08μ0i=7.2k^

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In a region of free space during the propagation of electromagnetic wave, the electric field at some instant of time t is E→=90i^N/C and the magnetic field is B¯=0.08ȷ^μ0T The poynting vector for these fields at that point is

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Ready to Test Your Skills?

free study material

In a region of free space during the propagation of electromagnetic wave, the electric field at some instant of time t is $\vec{E} = 90 \hat{i} N / C$ and the magnetic field is $\bar{B} = 0.08 \hat{ȷ} μ_{0} T$ The poynting vector for these fields at that point is