Question

what are electromagnetic waves? Write its characteristics and uses​

Answer 1

These electric and magnetic waves travel perpendicular to each other and have certain characteristics, including amplitude, wavelength, and frequency. General Properties of all electromagnetic radiation: Electromagnetic radiation can travel through empty space.

Answer 2

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Electromagnet is a soft iron bar wrapped around by a coil of conducting wire which behaves as a magnet on passing electric current through it.

Uses of electromagnet:

• To separate iron scrap from the junk in industries,

• Doctors use very small but strong electromagnets to remove iron dust from

a patient's eyes.

• In electric motors and receivers of telephones.

In picture tubes of television and computer screens. They help in the

formation of image on the screen.

• A number of electromagnets are used in a car which help in moving of

different parts and generate electricity as well.