Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1903)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 359
oting results. (e) Turn the coil so that it is horizontal; makeand break the circuit asin (c). The galvanometerneedle is not appreciablydeflected. Why is thisso, since it was stated thatthis was the maximumposition of induction ofa loop rotated in a bipolarfield ? Why is it differentin each case ?… … current of 5 amperes 309.—Students Experimental Dynamoand Motor. to now lor one secondin a positive direction, and then be automatically reversedand flow for one second in the opposite or negative direction,and reversed again, this cycle of events continuing at regularintervals whilethe current…
Electricity · Magnetism
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