One can in principle create a purely electric travelling electromagnetic wave in empty space $(\vec{B}=0)$.

Question

Quizplus · Accepted Answer

Electromagnetic waves in empty space always consist of both electric and magnetic components ($\vec{E}$ and $\vec{B}$) that oscillate perpendicular to each other and to the direction of propagation, as described by Maxwell's equations. A purely electric or purely magnetic wave cannot exist in isolation in empty space.

One Can in Principle Create a Purely Electric Travelling Electromagnetic (B⃗=0)(\vec{B}=0)(B=0)

One Can in Principle Create a Purely Electric Travelling Electromagnetic $(\vec{B}=0)$