Answer:
1 C
Explanation:
The intensity of electric current is defined as
[tex]I=\frac{q}{t}[/tex]
where
I is the current
q is the amount of charge transferred
t is the time interval during which the charge is transferred
For the lightning in this problem, we have
[tex]I=2.50\cdot 10^4 A[/tex] is the current
[tex]t=40.0 \mu s = 40.0\cdot 10^{-6} s[/tex] is the time interval
Solving the formula for q, we find the amount of charge transferred:
[tex]q=I t = (2.50\cdot 10^4 A)(40.0\cdot 10^{-6}s)=1 C[/tex]