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alternating current amount amperes apparatus applied armature arranged attraction axis battery body called carbon circuit conductor connected copper current flowing decreases device direct current direction disc discharge discovery earth Edison effect elec electric charge electric current electrical machine electrified electro-magnet electro-motive force electrodes experiments Faraday Faraday's filament Fleming's Franklin glass globe heat incandescent lamp increased induced insulated iron filings Joule's law length Leyden jar light lines of force loop magnetic field magnetic force magnetic pole mechanical melting ments metal motion motor needle nitrogen north pole number of lines Ohm's law passing pioneers plates platinum position pressure primary produced railway rectangle relation rent resistance result right-hand rule ring rotation secondary shown in Figure solenoid soon south pole speed substance telegraph telephone temperature theory tion transmission transmitted tricity tube turn unit vibrations voltaic cell volts winding wire zinc
Internet Archive: Details: Electricity, its history and development