Given a battery rated at 200 ampere-hours, how long can it provide a constant current of 10 amperes?

When evaluating how long a battery can deliver a constant current based on its ampere-hour rating, you can use the formula:

Time (in hours) = Capacity (in ampere-hours) / Current (in amperes)

In this case, the battery has a capacity of 200 ampere-hours, and the current draw is 10 amperes. Using the formula, we can calculate the time:

Time = 200 ampere-hours / 10 amperes = 20 hours.

This calculation indicates that the battery can sustain a constant current of 10 amperes for a total of 20 hours. Thus, the correct information indicates that the battery can indeed provide 10 amperes for a duration of 20 hours, matching the capacity defined by its ampere-hour rating.