The phase difference between the electric and magnetic field

The phase difference between the electric and magnetic fields in an electromagnetic wave is alternating between 0 degree and 90 degree. 90 degree. 45 degree continually changing. 0 degree.

Solution

0 degrees is the correct answer.

Beacuse, In an electromagnetic wave Electric and magnetic fields are perpendicular to each other and are perpendicalr to propogation of wave.

But They are always in face. Whenever electric filed is maximum, magnetic field is also maximum.

Whenever electric filed is minimum, magnetic field is also minimum.

so, E and B are always have same phase.