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14 ELECTRIC DWIlAMKtf* WAY1M .».V/>

dielectric, and maken the consideration of dielectric field* un-

necessarily complicated.

There obviouriy IB no more mine in thinking of the cupucity
current as current which charge* tin* conductor with it «(uuntity
of electricity, than thoro IH of H|w»akinR of the inductance voltage
as charging the conductor with a quantity of nmgnctiHtu. Bui
while the latter conception, together with the notion of a quantity
of magnetism, etc,, hat* vanished ninee Faraday^ representation
of the magnetic field by the linen of magnetic force, the termi-
nology of electrontaticH of many text (took* Hi ill *|M*nks of el«»ctrie
charges on the conductor, and the* energy stored by them, without
considering that the dielectric energy i« not- on flit* «urfwe of, the
conductor, but in the apace outniih* of thtt conductor, junt 11^ the
magnetic energy. *

10. All the lines of magnetic force tire clontui uinm thence! ve^»
all the lines of dielectric force terminate at conductors, m set»n in
Fig, 8, and the magnetic field and the dielectric Held thiw eiw l^
considered as a magmtie circuit and a f/iW*r/w? HrrnU.

To produce a magmiieflux *, u iw«f/«cfew«rfin* fuw F i« n*c|iilmi
Since the magnetic field is due* to the current, find in pro]H»rtionnl
to the current, or, in a coiled circuit, to the current time* the num-
ber of turns, magnetomotive force IB eipriwed in riiffni/ liirws or
ampere turns,

P » ni« {!2i

If F is the m.mX, I the length of the nmKwtic circuit, i*iti*rgi/***«I
byf, /P

/- (18)

is called the nwgiwtteiny /oree*, or magmik fmiliVwl, inid in ex-
pressed in ampere turn* per cm. (or induHtrially HonwlinutM in
ampere turns per inch).

In empty apace, and therefore with wry
mation, in all nonmagnctie nmtertal_t/am|nw tunw im em, lrii«tli
of magnetic circuit produce 3C w 4 T/ 10 ⁴ line* of iniigitt*tii* foiw
per square cm, section of the mapioUo rfwuit. (Hiw tin*
10-¹ results from the ampew Ix4ng l(h^l of tlm i*r i»g«.

unit of current*)

* The factor 4 IT is a auiri^al of tl» orii^ud ttoBniticm trf Um

intensity from the eonoeptioa of the magMitlft unit

was defined a$ that quantity of mufcnetbun whloh not* <m tin ijiiittility tit



	14 ELECTRIC DWIlAMKtf WAY1M* .».V/> dielectric, and maken the consideration of dielectric field* un- necessarily complicated. There obviouriy IB no more mine in thinking of the cupucity current as current which charge* tin* conductor with it «(uuntity of electricity, than thoro IH of H\|w»akinR of the inductance voltage as charging the conductor with a quantity of nmgnctiHtu. Bui while the latter conception, together with the notion of a quantity of magnetism, etc,, hat* vanished ninee Faraday^ representation of the magnetic field by the linen of magnetic force, the termi- nology of electrontaticH of many text (took* Hi ill \|Mnks of el«»ctrie charges on the conductor, and the* energy stored by them, without considering that the dielectric energy i« not- on flit* «urfwe of, the conductor, but in the apace outniih* of thtt conductor, junt 11^ the magnetic energy. * 10. All the lines of magnetic force tire clontui uinm thence! ve^» all the lines of dielectric force terminate at conductors, m set»n in Fig, 8, and the magnetic field and the dielectric Held thiw eiw l^ considered as a magmtie circuit and a f/iWr/w? HrrnU.* To produce a magmiieflux , u iw«f/«cfew«rfin fuw F i« nc\|iilmi Since the magnetic field is due to the current, find in pro]H»rtionnl to the current, or, in a coiled circuit, to the current time* the num- ber of turns, magnetomotive force IB eipriwed in riiffni/ liirws or ampere turns, P » ni« {!2i If F is the m.mX, I the length of the nmKwtic circuit, iitirgi/***«I byf, /P /- (18)

	is called the nwgiwtteiny /oree, or magmik* fmiliVwl, inid in ex- pressed in ampere turn* per cm. (or induHtrially HonwlinutM in ampere turns per inch). In empty apace, and therefore with wry mation, in all nonmagnctie nmtertal_t/am\|nw tunw im em, lrii«tli of magnetic circuit produce 3C w 4 T/ 10 ⁴ line* of iniigitttii foiw per square cm, section of the mapioUo rfwuit. (Hiw tin* 10-¹ results from the ampew Ix4ng l(h^l of tlm ir i»g«. unit of current)

	* The factor 4 IT is a auiri^al of tl» orii^ud ttoBniticm trf Um intensity from the eonoeptioa of the magMitlft unit was defined a$ that quantity of mufcnetbun *whloh not <m** tin ijiiittility tit