Question

If the direction of magnetic field B➙ at some instant is along + ve Z direction and the electromagnetic wave is propagating along + ve X direction, then the direction of electric field E➙ at that instant is ____

(A) along – ve Y direction

(B) along + ve Y direction

(C) along + ve X direction

(B) along – ve X direction

Answer 1

The correct option is (B) along + ve Y direction.

Explanation:

B➙ : + ve Z direction

wave: + ve X direction

E➙ × B➙ should be along X direction

E➙ should be along + Y direction