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The electric and the magnetic field, ass...

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

A

`[vecE =E_(0) hati, vecB= B_(0)hatj]`

B

`[vecE =E_(0) hatk, vecB=B_(0)hati]`

C

`[vecE = E_(0) hatj, vecB=B_(0)hati]`

D

`[vecE =E_(0) hatj, vecB =B_(0) hatk]`

Text Solution

Verified by Experts

The correct Answer is:
A
The electromagnetic wave is propagating along the +z axis.
Since the electric and magnetic fields are perpendicular to each other and also perpendicular to the direction of propagation of wave.
Also, `vecE xx vecB` gives the direction of wave propagation.
`vecE =E_(0) hati, B=B_(0)hatj" " ( :. i xx hatj=hatk)`
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