Is there a difference between electric current and electromagnetic wave?

1, current: it is the amount of electricity passing through a certain section of a conductor in unit time.

2. Electromagnetic wave: it is an oscillating particle wave derived and emitted by the same and vertical electric and magnetic fields in space.

Second, the reasons are different.

1. current: the free charge in the conductor makes regular directional motion under the action of electric field force to form current.

2. Electromagnetic wave: Electromagnetic wave is a form of movement of electromagnetic field. Electricity and magnetism can be said to be two sides of a whole. A changing electric field will produce a magnetic field (that is, a current will produce a magnetic field), and a changing magnetic field will produce an electric field. The changing electric field and the changing magnetic field constitute an inseparable and unified field, which is the electromagnetic field. The changing electromagnetic field propagates in space to form electromagnetic waves.

Third, the use is different.

1. Current: movable electrons in conductors, ions in electrolytes, electrons and ions in plasma, quarks in hadrons.

2. Electromagnetic waves: radio waves are used for communication, microwaves are used for microwave ovens, infrared rays are used for remote control, thermal imagers, infrared guided missiles, etc. Visible light is the basis of most biological observation, and ultraviolet light is used for medical disinfection, banknote inspection, distance measurement, engineering flaw detection and so on. X-rays are used for CT photography and gamma rays are used for treatment, which makes atoms jump and produce new rays.

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