Which is equal to 3000 milliamperes?

Just like in other metric measurements, the prefix 'milli-' means one one-thousandth. Therefore, one ampere is made up of exactly 1,000 milliamperes. To convert 3,000 milliamperes to base amperes, you divide by 1,000. Moving the decimal point three places to the left turns 3,000 milliamperes into 3 amperes. A common error is moving the decimal point in the wrong direction, which would incorrectly yield an enormous number like 3,000,000, or confusing the prefix 'milli' with 'micro' which would result in 0.003 amperes.