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A plane electromagnetic wave of frequenc...

A plane electromagnetic wave of frequency 100 MHz is travelling in vacuum along the x-direction. At a particular point in space and time, `vecB = 2.0 xx 10^(-8) hatk T` . (where, `hatk` is unit vector along z-direction) What is `vecE` at this point ? (speed of light `c=3xx 10^8 m//s` )

A

`6 . 0 hat(j) V//m`

B

`0 . 6 hat(k) V//m`

C

`6 . 0 hat(k) V//m`

D

`0 . 6 hat(j) V//m`

Text Solution

Verified by Experts

The correct Answer is:
A
`vec(E) = vec(B) xx vec(v)`
`vec(E) = (2 xx 10^(-8) hat(k)) xx ( 3 xx 10^(8) hat(i))`
`vec (E) = 6 hat(j)`
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