Electricity for public schools and colleges (1891)
Larden, W. (Walter), b. 1855 or 6 · London : Longmans · leaf 371
der to obtain more remarkable results. Experiments.—{\.) A coil is made of a quantity of fairly stout insulated•wire, and the ends of this wire are connected with the terminals c and d, sothat a current can be sent through it when desired. This coil A is concealedin fig. i., but is seen in fig. ii.… … Fig i. with these terminals, so that any current in B will be detected. The effectsare more marked if the wire of which B is made be very long. It, therefore,must be of fine wire, to admit of great length and many turns within a reason-able compass. The coil A is called the primary, and the coil B…
Electricity
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