The direction of propagation of the electromagnetic waves is along E×B.
Also E⋅B=0
When E is along −2i^−3j^
And B is along 3i^−2j^
Then E×B=(−2i^−3j^)×(3i^−2j^)
=4k^+9k^
=13k^ is along +ve direction also E⋅B=0
For plane electromagnetic waves propagating in the +z-direction, which one of the following combinations gives the correct possible direction for E and B field respectively?
Held on 11 Apr 2015 · Verified 6 Jul 2026.
(i^+2j^) and (2i^−j)
(−2i^−3j^) and (3i^−2j^)
(2i^+3j^) and (i^+2j^)
(3i^+4j^) and (4i^−3j^)
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