Why we use only electric in antenna y not magnetic waves?
Answers
Explanation:
An antenna is an electrical device which converts electric power into radio waves and vice versa we all know this.
In transmission, a radio transmitter supplies an electric current oscillating at radio frequency (i.e. a high frequency alternating current (AC)) to the antenna's terminals, and the antenna radiates the energy from the current as electromagnetic waves (radio waves). The electromagnetic wave has an E and B field which are perpendicular to each other; but in antenna reception we only use the E field of an electromagnetic wave in order to produce a tiny voltage at its terminals, that is applied to a receiver to be amplified....
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Answer:
Explanation:
Scientists call them all electromagnetic radiation. The waves of energy are called electromagnetic (EM) because they have oscillating electric and magnetic fields. ... All EM energy waves travel at the speed of light. No matter what their frequency or wavelength, they always move at the same speed.