Metrication in the United States There are no U.S. customary units for electric current, potential difference, or charge since these concepts were developed after the international adoption of metric in science. The metric units ampere, volt, ohm and coulomb are the only units used. The SI term hertz has replaced the term "cycles per second" as a unit of frequency. Energy is often measured in watt hours, BTUs, therms or calories rather than the SI joule. Residential and commercial electrical energy use is metered and billed in kilowatt hours, kW·h, as in most metric countries. Force measurements regularly use the pound instead of the SI
Jörg Ohm – those players were thought to have less potential than their comrades who joined SC Leipzig. However, at the end of the 1963–64 season, BSG Chemie Leipzig won the championship, with Ohm appearing in four matches. He stayed with Chemie Leipzig until 1968 and appeared in 33 matches for the side. However, when they won the FDGB-Pokal in 1966, Ohm was missing from the final squad. At the beginning of the 1968–69 season, Ohm joined 1. FC Magdeburg and won the cup for the first time in 1969. Not only did he play in the final this time, but also