An EM wave passes point P, traveling in the -x direction. At one instant of time

Question

An EM wave passes point P, traveling in the -x direction. At one instant of time, the magnetic field at point P points in the -z direction. At this same moment, the electric field at point P: a) points in the +y direction b) points in the -y direction c) must be zero at all times d) more information is needed to determine e) none of the above are correct An EM wave passes point P, traveling in the -x direction. At one instant of time, the electric field at point P points in the -z direction. At this same moment, the magnetic field at point P: a) points in the +y direction b) points in the -y direction c) must be zero at all times d) more information is needed to determine e) none of the above are correct

Explanation / Answer

Magnetic field points in -y direction. Electric field and magnetic field both are perpendicular to each other and perpendicular to EM wave.

Option b is correct.

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