Ampere 06 : One ampere is that constant current which, if present in each of two parallel conductors of infinite length and one metre apart in empty space, causes each conductor to experience a force of 2 x 10-7 newtons per metre of length
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}