If an ammeter calibrated in amperes is used to measure a 3000-milliampere current, what reading would it show?

When measuring current, it's important to understand the relationship between milliamperes and amperes. In this case, the current to be measured is 3000 milliamperes.

To convert milliamperes to amperes, you use the conversion factor where 1 ampere equals 1000 milliamperes. Thus, to convert 3000 milliamperes into amperes, you divide by 1000:

3000 milliamperes / 1000 = 3 amperes.

Therefore, when the ammeter calibrated in amperes measures a current of 3000 milliamperes, it accurately displays a reading of 3 amperes. This reflects the fact that the ammeter is correctly calibrating the input without any additional adjustments or conversions needed beyond understanding milliamperes as a fraction of amperes.