why lightining(electric current) travel to earth without any conductor?

Asked by firdoustantray98 | 3rd Mar, 2021, 06:34: PM

Expert Answer:

Charges are getting accumulated at clouds due to cosmic ray radiaition .
If clouds contain charges then potential is developed nearby region and we get electric field near cloud .
Air breakdown electric field is 3 × 106 V / m .  when electric field exceeds this maximum limit ,
electrical breakdown takes place in air and air is getting ionised. Energetic ions produced in the breakdown process
further increases the ionization . In this way lightning take place from cloud to ground

Answered by Thiyagarajan K | 4th Mar, 2021, 12:44: PM