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2Measurement of Resistance
NUMBER PAGE 1 Measurement of Specific Resistance
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accuracy adjustment alternating current ammeter ampere amplifier apparatus as shown approximately audio balance battery calculate calibration capacitance charge coil condenser connected constant correction couple current flows cycle damping decrease deflection determined dial direct current electrical electrodynamometer electrometer electromotive force electrons element equal equation EXPERIMENT filament flux frequency oscillator galvanometer gauge grid potential high resistance impedance input inserted instrument ions junction Leeds and Northrup manometer maximum McLeod Gauge measured mercury metal meter method mutual inductance necessary negative obtained ohms operating oscillograph output plate circuit plate current positive potential difference potentiometer pressure pyrometer quantity radio frequency range ratio reading relaxation oscillator resistor rheostat 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 voltage gain voltmeter volts wave length Wheatstone bridge zero