Convert Amperes to Abamperes
Convert Amperes (A) to Abamperes (abA) instantly and accurately.
Conversion Formula
abA = A × 0.1
About Amperes
The ampere (A) is the SI base unit of electric current, defined since 2019 by fixing the elementary charge e = 1.602 176 634 × 10⁻¹⁹ C. One ampere corresponds to approximately 6.241 × 10¹⁸ electrons passing a cross-section per second. Common benchmarks: a 60 W incandescent lamp draws 0.5 A at 120 V; household circuit breakers protect at 10-30 A; a car starter motor draws 100-200 A on cranking.
About Abamperes
The abampere (abA), also called the biot (Bi), equals exactly 10 A - the current unit of the CGS-EMU (electromagnetic) system. Two long parallel wires each carrying 1 abA and separated by 1 cm experience a force of exactly 2 dyn per centimetre; this definition directly parallels the original 1948 SI definition of the ampere. The abampere appears in nineteenth- and early-twentieth-century electrical engineering literature. 1 abA = 1 Bi = 10 A.
Quick Reference Table
| Amperes (A) | Abamperes (abA) |
|---|---|
| 1 A | 0.1 abA |
| 2 A | 0.2 abA |
| 5 A | 0.5 abA |
| 10 A | 1 abA |
| 25 A | 2.5 abA |
| 50 A | 5 abA |
| 100 A | 10 abA |