milliampere
Small electrical flow
A milliampere is one thousandth of an ampere—a unit measuring electric current.
Abbreviated mA, it appears in specifications for batteries, electronic components, and medical devices: The LED draws 20 milliamperes.
Household electronics typically operate in the milliampere range, while larger appliances require full amperes.
Electrical flow gauge
- multimeterCombined electrical measuring device
- currentDirected flow of charge
- galvanometerMeasures electrical flow strength
- voltmeterElectrical potential difference gauge
ohmmeter · readout · gauge · calibration · digital · analog · sensitivity · resolution
Directed flow of charge
- LEDSemiconductor that glows
- diodeOne-way semiconductor
- resistorCurrent-limiting circuit element
- transistorSemiconductor signal switch
capacitor · microcontroller · semiconductor · circuit board · breadboard · potentiometer · inductor · rectifier
Device regulating heartbeat
- hearing aidEar-worn sound amplifier
- sensorInput-detecting device
- thermocoupleDual-metal temperature sensor
- battery drainLoss of stored charge
trickle charge · low-power · wearable · smoke detector · remote control · quartz watch
Millionth of an ampere
- unitIndividual part or measure
- SIUniversal measurement framework
- prefixRoot-modifying front element
- thousandthOrdinal for 1000
magnitude · conversion · decimal · fraction · metric
ammeter
Electrical flow gauge
- multimeterCombined electrical measuring device
- currentDirected flow of charge
- galvanometerMeasures electrical flow strength
voltmeter · ohmmeter · readout · gauge · calibration · digital · analog · sensitivity · resolution · accuracy
current
Directed flow of charge
transistor · capacitor · microcontroller · semiconductor · circuit board · breadboard · potentiometer · inductor · rectifier · relay
pacemaker
Device regulating heartbeat
- hearing aidEar-worn sound amplifier
- sensorInput-detecting device
- thermocoupleDual-metal temperature sensor
battery drain · trickle charge · low-power · wearable · smoke detector · remote control · quartz watch
microampere
Millionth of an ampere
thousandth · magnitude · conversion · decimal · fraction · metric
- unitsunit, angstrom, yard, meter, base units
- Electrical Unitswatt, volt, coulomb, ohm, farad
- milli-unitsmilligram, millisecond, millivolt, milliwatt, millibar
- amperesamp, microampere, microamp
- electrical currentamp, microamp, nanoamp, AC current, DC current
- X-raysradiograph, chest x-ray, x-ray machine, bone x-ray, dental x-rays