HOW AND WHY CURENT FLOWS IN ATMOSPHERE WHILE LIGHTNING? IS THERE ANY POTENTIAL DIFFERENCE IN ATMOSPHERE ,,IF YES WHAT CREATES POTENTIAL DIFFERENCE IN ATMOSPHERE OR AIR(WHAT ACTS LIKE A BATTERY IN AIR)?EXPLAIN IN DETAIL.

Asked by abinash.gupta003 | 28th May, 2017, 06:18: PM

Expert Answer:

Causes of  electric current formation during lightning:


  • Lightning is caused due to the static electric charges developed in a cloud when hot and cold air rub through each other.
  • The warm cloud contains water vapour and the cold air contains ice crystals.
  • The static electric charges are so situated that it makes the cloud analogical to a battery with the positive charge situated at the topper end of the cloud and the negative charges situated at the bottom of the cloud.
  • When the charge at the bottom gets strong enough, the cloud lets out energy.
  • The energy goes through the air. It goes to a place that has the opposite charge as unlike charges attract each other.
  • This lightning bolt of energy that is let out is called a leader stroke. 
  • It can go from the cloud to the ground or from the cloud to another cloud.
  • When the main bolt or stroke goes back, up to the cloud, it makes a flash of lightning.
  • This is how an electric current is formed during the course of lightning.

Answered by Abhijeet Mishra | 30th May, 2017, 10:51: AM