Convert Coulombs to Abcoulombs
Convert Coulombs (C) to Abcoulombs (abC) instantly and accurately.
Conversion Formula
abC = C × 0.1
About Coulombs
The coulomb (C) is the SI derived unit of electric charge, equal to the charge transported by a current of 1 A in 1 s. In the 2019 SI revision it is fixed exactly via the elementary charge: 1 C = 1 / (1.602 176 634 × 10⁻¹⁹) e ≈ 6.241 × 10¹⁸ e. Practical benchmarks: a 1 Ah battery stores 3 600 C; a lightning bolt transfers 1-20 C.
About Abcoulombs
The abcoulomb (abC) equals exactly 10 C - the charge unit of the CGS-EMU (electromagnetic) system, defined as the charge transported by 1 abampere (= 10 A) in 1 s. Two parallel wires each carrying 1 abampere and spaced 1 cm apart experience a force of 2 dyn per centimetre length. The abcoulomb appears in older electromagnetic engineering literature from the early twentieth century. 1 abC = 10 C.
Quick Reference Table
| Coulombs (C) | Abcoulombs (abC) |
|---|---|
| 1 C | 0.1 abC |
| 2 C | 0.2 abC |
| 5 C | 0.5 abC |
| 10 C | 1 abC |
| 25 C | 2.5 abC |
| 50 C | 5 abC |
| 100 C | 10 abC |