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2MEASUREMENT OF RESISTANCE
3MEASUREMENT of CURRENT
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accuracy adjustment alternating current ammeter ampere amplifier apparatus as shown approximately audio frequency balance ballistic galvanometer battery calculate calibration capacitance charge coil condenser conductors connected constant correction couple current flows cycle damping decrease deflection determined dial direct current electrical electrodynamometer electrometer electromotive force electrons element equal equation errors EXPERIMENT filament flux frequency oscillator galvanometer gauge high resistance impedance input inserted instrument ions junction Leeds and Northrup manometer maximum mercury metal meter method mutual inductance necessary negative obtained ohms operating oscillograph output plate circuit plate current positive potential difference potentiometer pressure proportional pyrometer quantity radio range ratio reading relaxation oscillator resistor scale screen sensitivity shown in Fig shunt slide wire solution standard cell supply switch temperature terminals thermocouple torque unknown usually vacuum tube vacuum tube voltmeter variable varying volt voltmeter volts wave length Wheatstone bridge zero