A battery of an unmanned aircraft is 21% discharged with a capacity of 2,400 amps. How many amps remain in the battery?

To determine how many amps remain in the battery, we need to calculate the amount of discharge and then subtract that from the total capacity of the battery. The capacity of the battery is given as 2,400 amps, and it is 21% discharged.

First, calculate 21% of 2,400 amps:

21% can be expressed as a decimal, which is 0.21.

Multiplying this by the total capacity:

0.21 × 2,400 = 504 amps

This value represents how much has been discharged from the battery. To find out how many amps remain, subtract the discharged amount from the total capacity:

2,400 amps - 504 amps = 1,896 amps

Thus, the number of amps remaining in the battery is 1,896 amps. This is why this answer is correct and aligns with the calculations based on the information given in the question.