An electromagnetic wave travelling along y direction in 2 vacuum is described by electric field vector Ex = 9 sin(2πy-50t)îV/m. Obtain the expression for magnetic Share with your friends Share 0 Anshu Agrawal answered this Dear Student, B0 =E0C =93×108 =3×10-8So magnetic field B = 3×10-8sin(2πy-50t)kTesla Regards 0 View Full Answer