How are electromagnetic waves produced? What is the source?
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Solution
Electromagnetic wave
An electromagnetic wave is one type of transverse wave.
A transverse wave can travel without the need for a medium.
Light is an example of an electromagnetic wave.
Production of electromagnetic waves
According to electromagnetic theory, accelerating charged particles radiate electromagnetic waves.
Suppose an accelerated charged particle oscillates in space, definitely, it will produce a time-varying electric field and a time-varying magnetic field. This process will repeat again and again.
Hence, the accelerating charged particles are the source of electromagnetic waves.
