Lightning discharge time is 3 ms. current strength in the lightning channel is about 30 kA.

Lightning discharge time is 3 ms. current strength in the lightning channel is about 30 kA. What charge passes through the lightning channel?

Initial data: t (duration of a lightning discharge) = 3 ms = 3 * 10-3 s; I (value of the current in the lightning channel) = 30 kA = 30 * 10 ^ 3 A.
The charge that will pass through the lightning channel in a given time can be determined from the formula: I = q / t, whence q = I * t.
Let’s perform the calculation: q = 30 * 10 ^ 3 * 3 * 10 ^ -3 = 90 Cl.
Answer: A charge of 90 C passes through the lightning channel during the discharge.