Here's what it means:
* Amperes (A) are the unit of measurement for electric current. Current is the flow of electrical charge.
* Milli (m) is a metric prefix that means one-thousandth (1/1000).
Therefore, mA represents a unit of electric current that is one-thousandth of an ampere.
Example:
* 1000 mA = 1 A
* 50 mA = 0.05 A
Common uses of mA:
* Small electronic devices: Many small electronic devices, like smartphones, laptops, and headphones, use milliamperes to measure their current draw.
* Medical devices: Some medical devices, such as pacemakers and defibrillators, operate on milliamperes.
* Batteries: Battery capacities are often measured in milliampere-hours (mAh), which indicates how long the battery can deliver a certain current.