If an ammeter calibrated in amperes is used to measure a 3000-milliampere current, what reading would it show? [T5B06]
A. 0.003 amperes
B. 0.3 amperes
C. 3 amperes
D. 3,000,000 amperes
Don’t panic! This is a simple question about unit conversions, nothing more.
Remember your definitions of metric prefixes. Milli means one one-thousandth, or 0.001. Therefore, one milliampere is one one-thousandth of an ampere, or amp. We can just multiply like this (and also remember to bring your calculator with you to the test!)
and our answer is then C. 3 amperes.
