Small, Sidney Aylmer, 1876- [from old catalog] · Chicago, F. J. Drake & co · leaf 189
r. (1) Material of core. (2) Length of core. (3) Number of turns of wire in coil. (4) Current in coil. (5) Shape of magnet, 190 ELEMENTARY ELECTRICITY Question 9. Why does the material of the core affectthe magnet? Answer. To answer this clearly let us go back a little.A solenoid such as shown in… … Fig. 99. Flux in a Solenoid. If the solenoid is very short the density at the endsmay be much less than in the middle. Let us assume that we have a solenoid with a centralspace one square inch in area and of such a number ofturns and carrying such a current that it has 3133 A. T.(ampere-turns) to…
Electricity
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