Which of the following devices relies on electromagnetic radiation in the radio wave region of the spectrum for operation?
A)sun tanning lamp
B)electric light bulb
C)cellular telephone
D)electric toaster

Question

Quizplus · Accepted Answer

Cellular telephones operate by transmitting and receiving signals in the radio wave region of the electromagnetic spectrum, enabling wireless communication over distances.

Which of the Following Devices Relies on Electromagnetic Radiation in the Radio