Electricity and magnetism for advanced students (1920)
Starling, Sydney George, 1873- · London Longmans, Green · leaf 361
amperes) X cos 0. The following method brings us to the same result, and throwsadditional light upon the processes going on. Let the vector Eq (Fig. ^5) represent the maximum electromotive:orce, and Iq the maximum current. Re-solving Iq along and at right angles to Eq,we get the component Iq cos 6… … EqIq sin a sin (aE T /STr -Ln--r 90^) da, that is—— -^^ I .sin a cos a da = -5— COS J,a = f.OTT L Jo This latter component is called Idle or Wdiiless current gince itspresence does not contribute to the rate at which work is being done Fig. 325. 6- d _, -. rt - / >, , ^ 1 ■ 1 . rE -X^ \ ! \ ■?.…
Electricity · Magnetism
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