MAGNETISM AND ELECTRIC CUItltKNT

In equilibrium, 0.2 mlQ sin r = QAml^ cos r, or tun r
T = 63.4°.

9. (3) What is the total magnetic flux per / - 1000 in. Ir
passing between the conductora of a long distance traiiNmi
line carrying 1 amperes of current, if Id -- 0.82 cm. is th<* diam-
eter of the conductors (No. 0 B. & K.), 4 ~- 4f> cm. thn
or distance between them?

FIG. 2. —Diagram of trammuHHion lino for induc.tfinrti riilrttlatiim.

At distance lr from the oontor of one of the* comhir terns (Fig. 2),
the length of the magnetic circuit aurrounding thin ct
is 2xZr, the m.m.f., / ampere-turiro; tliun tli« nmm

/ = '2vT? and the field intcnHity // - 0.4 T/ - ••'•'. » utid tln»
flux in the zone dZr is d<I> = •• * •' (:" % mul th« totul flux from tint

surface of the conductor to the next tumdurtor IH,

The same flux is produced by the return wmdtictor in Hit*
same direction, thus the total flux passing between tho
mission wires is,

24> « 0.4 /Ikig,^
or per 1000 m. « 105 cm. length,
2 * = 0.4 X 10* I log, h~* » 0.4 X 10s X 4 JO / « «.I«H X 10< /f