Question

Сколько времени длится молния, если через поперечное сечение её канала протекает заряд 25Кл, а сила тока в среднем равна 30 кА???

Answer 1

t = q : I 

t =  30 Кл : 25000 А = 0,0012 с

t = 0,0012 с 

Answer 2

Calculation of Lightning Duration

To calculate the duration of a lightning strike, we need to use the formula:

Duration = Charge / Current

Given: - Charge (Q) = 25 kilocoulombs (25 kC) - Current (I) = 30 kiloamperes (30 kA)

Using the formula, we can calculate the duration of the lightning strike:

Duration = 25 kC / 30 kA

To perform the calculation, we need to convert the units to coulombs (C) and amperes (A):

1 kilocoulomb (kC) = 1000 coulombs (C) 1 kiloampere (kA) = 1000 amperes (A)

Converting the units:

Duration = (25 kC * 1000 C/kC) / (30 kA * 1000 A/kA)

Simplifying the expression:

Duration = (25 * 1000 C) / (30 * 1000 A)

Duration = 25/30 seconds

Therefore, the duration of the lightning strike is approximately 0.833 seconds.

Please note that this calculation is an approximation and may not account for all factors involved in a lightning strike.