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The Electric Circuit
Resistance and Temperature Rise
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air-gap alternating current ammeter ampere-hours ampere-turns amperes applied voltage armature current armature reaction armature resistance back e.m.f. battery brush cable capacitor cell cent centimetres Chapter characteristic charge coil commutator conductor connected connexions constant copper copper loss core critical resistance cross-section current flows curve direction dynamo efficiency electrical energy example exciting current flux density flux per pole ft-lb full load galvanometer give given heat hysteresis illumination increase induced e.m.f. instrument insulation internal resistance iron joules lamp length lines of force load current lumen machine magnetic circuit magnetic field magnetic flux measured method negative no-load number of turns obtained ohms output parallel polarity positive potential difference potentiometer produced proportional radiation resistor rotation shown in Fig shunt shunt motor speed square centimetres steel Suggestions for Experimental supply temperature rise terminal p.d. terminal voltage torque total resistance unit voltage drop voltmeter volts watts wave wire zero