Convert Attoamperes to Gigaamperes
Convert Attoamperes (aA) to Gigaamperes (GA) instantly and accurately.
Conversion Formula
GA = aA × 1.000000000e-27
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.
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.
Quick Reference Table
| Attoamperes (aA) | Gigaamperes (GA) |
|---|---|
| 1 aA | 1 × 10-27 GA |
| 2 aA | 2 × 10-27 GA |
| 5 aA | 5 × 10-27 GA |
| 10 aA | 1 × 10-26 GA |
| 25 aA | 2.5 × 10-26 GA |
| 50 aA | 5 × 10-26 GA |
| 100 aA | 1 × 10-25 GA |