Brechner, Claude H., 1887- [from old catalog] · Boston, New York [etc.] Allyn and Bacon · leaf 212
exactlythe same as before. Xow, if instead ofthrusting in and pull-ing out this electro-magnet, the core withthe wire around it isplaced inside the coil of wire, and the key (K) is pressed and released, the sameeffect is obtained. While the key is open, the core is not a magnet; thenwhen it is… … Figure 210.—An Electro-magnet in aCoil of Wire. 202 INDUCTION Thus we see that if two coils are placed so that one isinside the other, and a current is made in one, a currentis induced in the other. Also, if a current is stopped inone, a current is induced in the other, in the oppositedirection.…
Physics
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