An electromagnetic wave travelling along $$z-axis$$ is given as E→$$=E$$→$$ocos(kz$$−$$wt)(-j^)$$. Choose the wrong option from the following

Question

An electromagnetic wave travelling along $$z-axis$$ is given as  E→$$=E$$→$$ocos(kz$$−$$wt)(-j^)$$. Choose the wrong option from the following

Infinity Learn · Accepted Answer

Suppose an electromagnetic wave is travelling along negative $$z-direction$$. Its electric field is given by E→$$=E$$→$$ocos(kz$$−$$wt)(-j^)$$ which is perpendicular to  $$Z-axis$$. It acts along negative $$y-directionThe$$ associated magnetic field  in electromagnetic wave is along positive $$x-axis$$, i.e, along (k^$$×E→$$). As  $$Bo=EoC$$  ∴B→$$=1C(k^$$×E→$$)So$$, option $$1$$ is correctThe associated electric field can be written in terms of magnetic field as E→$$=C(B$$→×$$k^)$$ . So, option $$2$$ is correctAngle between $$k^$$ and E→ is $$900$$ and between  $$k^$$ and  B→ is $$900$$ . So option $$3$$ is correct

An electromagnetic wave travelling along z-axis is given as $\vec{E} = {\vec{E}}_{o} \cos (k z - w t) (- \hat{j})$ . Choose the wrong option from the following

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An electromagnetic wave travelling along z-axis is given as E→=E→ocos(kz−wt)(-j^). Choose the wrong option from the following

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An electromagnetic wave travelling along z-axis is given as $\vec{E} = {\vec{E}}_{o} \cos (k z - w t) (- \hat{j})$ . Choose the wrong option from the following