Question

What are electromagnetic Waves? and how are they produced??

Answer 1

When a charge particle moves with acceleration then it produces both electric and magnetic field and the Electromagnetic waves are produced. These EM wave have are energy waves having perpendicular electric and magnetic fields. These waves can travel in vaccum and also and no medium is required for their propagation. These are generally called radiation.

Mobile communication is based on EM waves.

Electromagnetic waves are formed as a result of accelerating (electric) charges under electric field. Electric charge exhibit electrostatic behavior and once they start moving magnetic effects come into play. As a result of this a duality is established which is called electromagnetism. The electromagnetic waves are emitted by those charged particles. These waves move with the velocity of light.