Millikan, Robert Andrews, Gale, Henry Gordon · Boston : Ginn and Co. · leaf 353
netic drag due to the reaction between the magnets31 and the current induced in the rotatuig aluminium disk Dwhich rotates between the poles of the magnets. The record-ing dials have therefore a speed which is proportional to the■ivatts used, and their total rotation is proportional to the… … Fig. 321. Interior of watt-hour meter INDUCTION COIL AND TRANSFORMER 305 QUESTIONS AND PROBLEMS 1. What is the function (use) of the field magnet of a dynamo?AVood is cheaper than iron; wliy are not the field cores made of wood? 2. How would it affect the voltage of a dynamo to increase the speedof…
Physics
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