 | 1918 - 334 стор.
...Petersburg [Petrograd], 1843 ' Leiiz and Jacob! suggested that the magnetism of an electromagnet was proportional to 'the current and to the number of turns of wire in the coil.' — Prof. Xilvanus 7'/мшр.ч0», F. H S. JAHRESBERICHT über die FORTSCHRITTE der... | |
 | Silvanus Phillips Thompson - 1894 - 648 стор.
...amount of magnetism produced. Lenz and Jacobi suggested that the magnetism of an electromagnet was proportional to the current and to the number of turns of wire in the coil — in other words, is proportional to the ampere-turns. Or in symbols m = aCS, where a... | |
 | William Perren Maycock - 1902 - 486 стор.
...circuits, the electric and the magnetic.1 If we consider the first, we have by Ohm's law, C = E -r R. In a similar manner we may roughly talk about the...Thus :— (Electric Circuit.) Electro-motive force. Current = : Resistance. (Magnetic Circuit.) _,, Magneto-motive force. Flux = — ° -r, . — (Magnetic... | |
 | Sir Norman Lockyer - 1901 - 726 стор.
...current flowing in the coils of wire on the magnet produces what is called a " magnetomotive force," which is proportional to the current and to the number of turns of wire ; and a certain fraction of this quantity is used to send the magnetism through the iron rod and the... | |
| |
The current flowing in the coils of wire on the magnet produces what is called a " magnetomotive force," which is proportional to the current and to the number of turns of wire ; and a certain fraction of this quantity is used to send the magnetism through... 