. Cyclopedia of applied electricity : a practical guide for electricians, mechanics, engineers, students, telegraph and telephone operators, and all others interested in electricity . at the magnetic fivild exerts itsinfluence in certtiin definite directions which are called the linrsof magnetic force^ or simply lines of force. The field of a horse-shoe magnet is represented in Fig. 4, and tiiat about the end of abar magnet is represented in Fig. 5. It ELEMENTS OF ELECTUKITY. iVlajrnetic Induction. It is because of this magnetic field thatniiignets liave tlie power of attracting pieces (»f iro
. Cyclopedia of applied electricity : a practical guide for electricians, mechanics, engineers, students, telegraph and telephone operators, and all others interested in electricity . at the magnetic fivild exerts itsinfluence in certtiin definite directions which are called the linrsof magnetic force^ or simply lines of force. The field of a horse-shoe magnet is represented in Fig. 4, and tiiat about the end of abar magnet is represented in Fig. 5. It ELEMENTS OF ELECTUKITY. iVlajrnetic Induction. It is because of this magnetic field thatniiignets liave tlie power of attracting pieces (»f iron. Wlien apiece of iron is In-onght under its influenee, it becomes a tempo-rary magnet, and for the time being has its two poles. If thenorth pole of the permanent magnet is adjacent to the piece ofii-on, a south pole will he induced in the iron next to this northpole and a north pole in the portion farthest from it. The attrac-tion is tlien exactly similar to the attraction between two perma-nent magnets when unlike poles are brought together. Thisaction of developing magnetism in iron is called magnetic{luhation. The attraction of iron is therefore due to the fact that the.
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