Читать книгу Introduction to Desalination - Louis Theodore - Страница 37

The ampere is defined as that current which, if maintained in each of two long parallel wires separated by 1 meter in free space, would produce a force between the two wires (due to their magnetic fields) of 2 × 10^-7 N/m length. The SI unit of voltage is the volt (V), where one volt equals 1 W/A. The unit of electrical resistance is the ohm (Ω). One ohm equals 1 V/A.