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NEST2014PhysicsCapacitance

The figure on the right represents an idealized sinusoidal current flow between a cloud at a height of 1 km and the earth during lightning discharge. Here I₀=157 kA , T=0.2 ~ms and the breakdown electric field of air is 300 kV / m . Then

Options

  1. Athe total charge released by the lightning is 20 C .
  2. Bthe electrostatic energy of the cloud - earth system is 10 kJ .
  3. Cthe average current is 100 kA .
  4. DThe capacitance of the cloud - earth system is 6.67 10⁻⁵ ~F .

Correct answer

C. the average current is 100 kA .

Step-by-step solution

No solution available.

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