A plane electromagnetic wave of frequency 20 MHz travels through a space along `x` 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 ?

Options

A. `2 xx 10^(-8) T`
B. `(1)/(2) xx 10^(-8)T`
C. 2T
D. `(1)/(2)T`

Answer

A

Explanation

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