Question

The breakdown electric field for air is 3  105
Vm1
. How many number of minimum electrons’ charge
should be accumulated in the cloud in-order to cause lightning? Provided the average distance from
cloud to ground is 6  106 m

Answer 1

Answer:

man electric field when ν change is

given occurs at the surface ∴e E=r2kν

∴  for breakdown  not to occur

r2kq=3×10−6

ν=4×1043×10−6×10−6

ν=0.33×10−9c

ν= 0.33n c