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Physics question on lighting strike?
A 5 km lightning stroke lasts 0.02 s and involves a flow of 100 C. Right before this lightning strike, the electric field is found to be 3 million N/C or 3 million V/m. a) What force is felt by the flow? b) What current is in the lightning? c) What is the voltage in this lightning strike? d) What is the resistance in the air around this lightning strike?
- billrussell42Lv 72 months ago
I = 100 C / 0.02 s = 5000 amps
3 million N/C x 100 C = 300 million N
3 million V/m x 5000 m = 15000 million V
resistance of the air around the strike is very high.
resistance of the ionized air that conducts the strike is 15000/300 = 50 Ω