Electrical engineering credited with establishing the term "electricity". He also designed the versorium: a device that detects the presence of statically charged objects. In 1762 Swedish professor Johan Carl Wilcke invented a device later named electrophorus that produced a static electric charge. By 1800 Alessandro Volta had developed the voltaic pile, a forerunner of the electric battery In the 19th century, research into the subject started to intensify. Notable developments in this century include the work of Georg Ohm, who in 1827 quantified the relationship between the electric current and potential difference in a conductor, of Michael Faraday (the discoverer of electromagnetic
Electric vehicle battery kWh capacity in order to make an impact on petrol cars. Citigroup indicates $230/kWh. Toyota Prius 2012 plug-in's official page declare of autonomy and a battery capacity of 5.2 kWh with a ratio of /kWh, while the Addax (2015 model) utility vehicle already reaches 110 kilometres (68.5 mi) or a ratio of 7.5 kilometers (4.6 mi)/kWh. Battery electric cars achieve about /kWh. The Chevrolet Volt is expected to achieve 50 MPGe when running on the auxiliary power unit (a small onboard generator) at 33% thermodynamic efficiency that would mean 12 kWh for , or about 240 watt-hours per mile. For