Question

what is conduction of electricity through air called?
give class 8 standard answer.

Answer 1

If it did, we wouldn't exist.

Air is an insulator or dielectric or whatever you like to call it. 

Do note that insulators breakdown beyond a certain threshold voltage called breakdown voltage or dielectric strength. It is generally expressed as KV/mm( Kilo volt per milli meter). The air has a dielectric strength of about 3 KV/mm. If a voltage exceeding 3 KV per mm of air builds up, the air gets ionized and discharge takes place resulting in emission of energy in the form of lightning and thunder.

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Answer 2

Air ionization

Explanation:

• The air ionization is the process of conduction of electricity but not at the same way as the metals do.
• The ionization of air occurs when the air molecules gain the electrons or loose their own electrons. This process is called as ionization.
• An air ionizer is a device which is used to ionize the air, this device is used at the high voltage to ionize the air. The negative ions or anions are the particles which have one or more extra electrons whereas the cations can miss one or more electrons and attains the net positive charge on them.

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