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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)hatk]`

C

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

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 field are perpendicular to the direction of propagation of wave.
Also, `vecExxvecB` gives the direction of wave propagation.
`therefore vecE=E_(0), hati, B=B_(0)hatj" "(because hatixxhatj=hatk)`
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