A large lightning bolt consists of a 18.2~\text{kA}18.2 kA current that moved 30.0~\text{C}30.0 C of charge. Assuming a constant current during the discharge, what is the duration of this lightning bolt?

The duration of the lightning bolt is 1.65 milliseconds

Explanation:

Current is a physical quantity that tells how much charge (q) pass through a specific surface, and its unit on the International system of units is the ampere (A), that is coulomb over time . So current equation is:

If I is constant then the equation becomes:

With Q the net charge

Solving for t: