Convert Gigaamperes to Attoamperes
Convert Gigaamperes (GA) to Attoamperes (aA) instantly and accurately.
Conversion Formula
aA = GA × 1.000000000e+27
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 Attoamperes
The attoampere (aA) equals 10⁻¹⁸ A, the scale of single-electron tunnelling currents in quantum devices. Individual electrons tunnelling through a molecular junction or quantum dot produce average currents of order 1-100 aA when measured at sub-microsecond resolution; cryogenic shot-noise electrometers achieve sub-attoampere sensitivity. 1 aA = 10⁻³ fA = 10⁻¹⁸ A.
Quick Reference Table
| Gigaamperes (GA) | Attoamperes (aA) |
|---|---|
| 1 GA | 1 × 1027 aA |
| 2 GA | 2 × 1027 aA |
| 5 GA | 5 × 1027 aA |
| 10 GA | 1 × 1028 aA |
| 25 GA | 2.5 × 1028 aA |
| 50 GA | 5 × 1028 aA |
| 100 GA | 1 × 1029 aA |