Lightning discharge time is 0, 003 s. The current strength in the lightning channel is about 30 kA.

Lightning discharge time is 0, 003 s. The current strength in the lightning channel is about 30 kA. What charge passes through the lightning channel?

Given:
t = 0.003 seconds – lightning discharge time;
I = 30 kA – electric current in the lightning channel.
It is required to determine q (Coulomb) – the charge that passes through the lightning channel.
We translate the units of measurement of the current strength into the SI system:
I = 30 kA = 30 * 1000 = 30,000 amperes.
Then, to determine the charge, you must use the following formula:
q = I * t;
q = 30,000 * 0.003 = 90 pendant.
Answer: the electric charge in the lightning channel is 90 Coulomb