Advanced theory of electricity and magnetism; A text-book for colleges and technical schools (1915)
Franklin, William S. (William Suddards), 1863-1930, MacNutt, Barry, 1878-1936. joint author · New York, Macmillan · leaf 58
front view Fig. 39. lines of force of the magnetic field due to a current in the coil areshown in the side view. The amount of magnetic flux $ throughthe opening of the coil is proportional to the current I in thecoil. That is, we may write: $ = LI (1) where L is a proportionality factor which…
Electricity · Magnetism
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