1.

A plane electromagnetic wave of frequency 20 MHz travels through a space alongx direction. If the electric field vector at a certain point in space is 6 V m^(-1), what is the magnetic field vector at that point ?

Answer»

`2 xx 10^(-8) T`
`(1)/(2) xx 10^(-8)T`
2T
`(1)/(2)T`

SOLUTION :`E//B = C`
`B = E//C = (6)/(3 xx 10^(8)) = 2 xx 10^(-8) T`


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