If an electric charge is rapidly shaken up and down,
A)sound is emitted.
B)light is emitted.
C)electron excitation occurs.
D)an electromagnetic wave is produced.

Question

Quizplus · Accepted Answer

When an electric charge is rapidly shaken up and down, it creates a varying electric and magnetic field. This variation generates an electromagnetic wave which can travel through space without the need for a medium. Therefore, option D is the correct choice. Options A, B, and C are incorrect because sound and light require a medium to propagate and electron excitation alone does not produce any detectable emission.

If an Electric Charge Is Rapidly Shaken Up and Down