A plane electromagnetic wave travels in free space along the x-direction. The electric field component of the wave at a particular point of space and time is E = 6 Vm–1 along y-direction. Its corresponding magnetic field component, B would be -
(1) 2 x 10–8 T along y-direction
(2) 6 x 10–8 T along z-direction
(3) 2 x 10–8 T along z-direction
(4) 6 x 10–8 T along x-direction