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 42
Fig. 26. Let A0 be the angle in radians which is subtended by Al; thenAl = r-A9, and equation (2) becomes: AT = ZIHr2s\tfO-Ad (3) THE MAGNETIC MEASUREMENT OF CURRENT.Therefore X 9=2,rsin2 e -dd. =0 or T = ^ZIH 31 (4) (5) Note.—When the field H is at right angles to the axis aboutwhich the torque T… … Fig. 27.Top view of suspended coil. the coil as shown in Fig. 27, then H cos <j> is the component ofthe field which lies in the 7 plane of the coil, and substi-tuting H cos 0 for H inequations (1) or (5) we getthe correct expression forT for the case shown inFig. 27. 21. The Siemens…
Electricity · Magnetism
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