The electric field in a thunderstorm is approximately 105 V/m and the potential difference between the cloud and the ground is 20 MV. Taking the cloud to be cylindrical of height 10 km and diameter 20 km, if a typical lightning flash transfers 30 C of charge and a flash occurs every 5s, how long will the storm last if energy is not replenished.

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.