Yahoo Answers is shutting down on 4 May 2021 (Eastern Time) and, as of 20 April 2021 (Eastern Time), the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

Anonymous
Anonymous asked in Science & MathematicsPhysics · 2 months ago

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?

1 Answer

Relevance
  • 2 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

Still have questions? Get answers by asking now.