Question

How the clouds become charged ?

Answer 1

Any1 can help?

Answer 2

Lightning is caused by the build up of electrostatic charge in clouds. One region within the cloud builds up a positive charge and the other a negative charge.but the bottom of the cloud usually ends up being negatively charged and the top positively charged

Answer 3

the usual excuse is friction between things in motion, eg air and water vapour. but i think that in truth it is way more complicated. there's a whole chapter in this in the Feynman Lectures (attached).