The electric and the magnetic field, associated with an E.M. wave , propagating along the $+ z$ axis, can be represented by

[\to E = E_{o}^j, \to B = B_{o}^k]

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[\to E = E_{o}^i, \to B = B_{o}^j]

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[\to E = E_{o}^k, \to B = B_{o}^i]

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[\to E = E_{o}^j, \to B = B_{o}^i]

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Solution

The correct option is B $[\to E = E_{o}^i, \to B = B_{o}^j]$
Dirft velocity of propagation $= z$
So, $E$ & $B$ should be $i$ & $j$ ( $x$ & $y$ )
as these are perpendicular to each other
$\to E \times \to B = + z$
$\to E$ must be $^i$
$\to B$ must be $^j$
As, $^i \times^j =^k$
and $^j \times^i = -^k$

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The electric and the magnetic field, associated with an E.M. wave , propagating along the +z axis, can be represented by

The correct option is B [→E=Eo^i,→B=Bo^j]Dirft velocity of propagation =zSo, E & B should be i & j (x & y)as these are perpendicular to each other→E×→B=+z →E must be ^i→B must be ^jAs, ^i×^j=^kand ^j×^i=−^k

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