An ohm is equivalent to a volt per ampere. The voltage drop is known as the burden voltage, specified in volts per ampere. Magnitude of 10 Watt per Ampere are common. Coercivity is usually measured in oersted or ampere/meter units and is denoted "H". Nvidia has retired the Tesla brand with the release of the Nvidia Ampere A100 GPU. There are two possible units for monopole strength, Wb (Weber) and A m (Ampere metre). The definitions for absolute electrical system based on the ampere were formalised in 1948. Furthermore, elementary charge also takes a fixed value of to define Ampere. Hopper is the codename for Nvidia's GPU microarchitecture that will succeed Ampere. The Ampere microarchitecture is the successor to Volta. This principle is derived from the ampere balance. The interior has a decoration with a mixture of baroque and ampere styles. The Sharp PC-5000, Ampere and Gavilan SC released in 1983. The decision was taken internationally to use the ampere. The definition of the ampere underwent a major revision.