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 total cost of ownership. As of 2015, electric cars are more expensive to initially purchase, but cheaper to run, and in at least some cases, total cost of ownership may be lower. According to "Kammen et al., 2008", new PEVs would become cost efficient to consumers if battery prices would decrease from $1300/kWh to about $500/kWh (so that the battery may pay for itself). In 2010, the Nissan Leaf battery pack was reportedly produced at a cost of $18,000. Nissan's initial production costs at the launch of the Leaf were therefore about $750 per kilowatt hour (for the 24 kWh