A plane electromagnetic wave travels in free space along 2-axis. At a particular point in space, the electric field along y-axis is `9.3 V m^(-1)`. The magnetic induction (B) along z-axis is

Options

A. `3.1 xx 10^(-8) T`
B. `3 xx 10^(-5) T`
C. `3 xx 10^(-6) T`
D. `9.3 xx 10^(-6) T`

Answer

A

Explanation

Velocity of light
`C=(E)/(B) implies B=(E)/(C)=(9.3)/(3 xx 10^(8))=3.1 xx 10^(-8) T`