Convert Gigaamperes to Microamperes
Convert Gigaamperes (GA) to Microamperes (µA) instantly and accurately.
Conversion Formula
µA = GA × 1000000000000000
About Gigaamperes
The gigaampere (GA) equals 10⁹ A, a scale that lies beyond any man-made device and arises only in extreme astrophysical or geophysical contexts. Large-scale magnetospheric Birkeland field-aligned currents between Earth's ionosphere and magnetosphere are estimated at 1-10 MA total, well below 1 GA; however, pulsar magnetosphere discharge models and neutron-star lightning analogues are sometimes expressed in gigaampere terms. 1 GA = 10⁹ A = 10³ MA.
About Microamperes
The microampere (µA) equals 10⁻⁶ A, common in low-power sensor circuits, analogue signal conditioning, and bioelectrical measurement. Surface ECG electrodes record body currents of 1-100 µA; a 1 mW signal at 5 V draws 200 µA; modern low-power microcontrollers sleep at 1-10 µA, enabling coin-cell operation for months or years. 1 µA = 10⁻³ mA = 10³ nA.
Quick Reference Table
| Gigaamperes (GA) | Microamperes (µA) |
|---|---|
| 1 GA | 1 × 1015 µA |
| 2 GA | 2 × 1015 µA |
| 5 GA | 5 × 1015 µA |
| 10 GA | 1 × 1016 µA |
| 25 GA | 2.5 × 1016 µA |
| 50 GA | 5 × 1016 µA |
| 100 GA | 1 × 1017 µA |