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How electric energy converted into electromagnetic waves?
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asked Sep 8, 2016 | 2,849 views

Antenna is also used for conversion of electrical energy to electromagnetic energy..

The ability of antennas to couple electrical signals with free-space electromagnetic radiation is made possible by the fact that accelerating charges radiate electromagnetic energy.

Antennas, like the simple dipole antenna below, are driven by an oscillating AC current with a frequency corresponding to the frequency of the radiated waves.  This creates a situation where electrons are continuously being accelerated from the top, to the bottom, and back up again.

answered Dec 17, 2018
edited Dec 18, 2018

Conversion of electric energy into electromagnetic waves can be done by an AC current with a desired freq of waves. Hence by changing the current it results in magnetic field , accelerated electron particles radiate in the form of waves ; Electromagnetic waves.

Visible light is an electromagnetic radiation. Other familiar electromagnetic radiations are invisible to the human eye, such as radio waves, infrared light and X-rays.

"electromagnetic radiation consists of electromagnetic waves"

answered Sep 8, 2016

An antenna can be viewed as just another circuit element, along with the other elements you already know about. Moreover an antenna can be viewed as a transducer - converting voltages and currents to fields. Take a simple dipole antenna for example. The antenna will have a frequency range for which it radiates, you feed your signal (of appropriate frequency) into the antenna, the antenna radiates and generates fields.

answered Dec 21, 2018 by

All you do is produce an alternating current in an antenna, with the desired frequency.The changing current produces a changing magnetic fteld, which produces a changing electric field, which produces a changing magnetic field,

answered Dec 29, 2018