Electricity and magnetism for advanced students (1920)
Starling, Sydney George, 1873- · London Longmans, Green · leaf 366
absorbed in the circuit is again ^IqEq cos 6, and the idle or wattlesscomponent of the current is l„ sin 0 (see p. 350). If in addition, R = 0, tlien 0 = 90^, and the current is entirelywattless. xn. CHOKING COIL \J (iv) When I>i = C^ ^ = then, 1 = Ti- sin pt 355 = 0. In this case the current is… … xand are in opposite phases. We may say that the wattless currentVequired by the inductance is supplied by the capacity (Fig. 329). ^ Choking Coil.—For many purposes it is required to reduce thecurrent in a given circuit, with a minimum waste of energy, when thecurrent is derived at constant…
Electricity · Magnetism
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