Question: Lighting strikes flat ground with current I at point O a) what is the current density J at distance r away from O? b) Assuming

Lighting strikes flat ground with current I at point O

a) what is the current density J at distance r away from O?

b) Assuming the ground is Ohmic with resistivity ? What is the electric field E that is produced by the lighting at a distance r away from O?

c) what is the potential difference between the front and hind feet of an animal if there feet are D and (D + Δr) away from O?

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