Small, Sidney Aylmer, 1876- [from old catalog] · Chicago, F. J. Drake & co · leaf 198
l developpolarity at X. and S. as shown in B. This shows that the magnetism flowed around thering and also across the air gap when one was made. Molarity 199 Question 29. Why was there no polarity in Fig.101 A? Answer. Because the iron being a good conductor theflux passes through it and… … Fig. 101. Magnetic Polarity of an Iron Ring. Question 30. Why did Fig. 101 B show polarity? Answer. Because the air gap being a poor conductor,the flux spread out as indicated and affected a compassneedle brought near it. Question 31. Why should Fig. 101 C develop polesat opposite sides of the ring…
Electricity
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