An electromagnetic wave travels in free space along the x -direction. At a particular point in space and time, B =2 × 10^-7 j T is associated with…

An electromagnetic wave travels in free space along the $\displaystyle x$-direction. At a particular point in space and time, $\displaystyle \vec{B}=2 \times 10^{-7} \hat{j} \mathrm{~T}$ is associated with this wave. The value of corresponding electric field $\displaystyle \vec{E}$ at this point is $\displaystyle \_\_\_\_$ V/m.