Imagine a source that in one inertial reference frame creates a uniform electric field but no magnetic field. In another inertial reference frame, the same source might create a magnetic field but no electric field.

Question

Quizplus · Accepted Answer

According to the principles of electromagnetism, specifically the theory of relativity, if a source creates a uniform electric field in one inertial frame, it will create both electric and magnetic fields in another inertial frame moving relative to the first.

Imagine a Source That in One Inertial Reference Frame Creates