The equivalent circuit of the antenna ( including loading coil ) is the series combination of the capacitive reactance of the antenna, the inductive reactance of the loading coil, and the radiation resistance and the other resistances of the antenna-ground circuit.
32.
The so-called " reflector " element, being longer than ? / 2, has an inductive reactance which means the phase of its current lags the phase of the open-circuit voltage that would be induced by the received field.
33.
In electric power systems, inductive reactance ( and capacitive reactance, however inductive reactance is more common ) can limit the power capacity of an AC transmission line, because power is not completely transferred when voltage and current are out-of-phase ( detailed above ).
34.
In electric power systems, inductive reactance ( and capacitive reactance, however inductive reactance is more common ) can limit the power capacity of an AC transmission line, because power is not completely transferred when voltage and current are out-of-phase ( detailed above ).
35.
The voltage on a speaker wire depends on amplifier power; for a 100-watt-per-channel amplifier, the voltage will be about 30 volts RMS . At such voltage, a 1 % loss will occur at 0.3 ohms or more of inductive reactance.
36.
When the other windings of a transformer are open ( unloaded ), and you excite the primary winding with its rated voltage at rated frequency, the transformer and the winding should act as an inductor with sufficient inductive reactance to limit the exciting current to a reasonable low value.
37.
Consequently, transmission lines can only heat up so much ( or else they would physically " sag " too much ), so transmission line operators have a ceiling on the amount of current that can flow through a given line, and excessive inductive reactance can limit the power capacity of a line.
38.
The total reactance at the angular frequency \ omega therefore is given by the geometric ( complex ) addition of a capacitive reactance ( Capacitance ) X _ C =-\ frac { 1 } { \ omega C } and an inductive reactance ( Inductance ) : X _ L = \ omega L _ { \ mathrm { ESL } }.
39.
The Q factor of an inductor can be found through the following formula, where " L " is the inductance, " R " is the inductor's effective series resistance, " & omega; " is the radian operating frequency, and the product " & omega; L " is the inductive reactance:
40.
The phase of the voltage across a purely reactive device ( a capacitor with an infinite resistance or an inductor with a resistance of zero ) " lags " the current by \ scriptstyle { \ pi / 2 } radians for a capacitive reactance and " leads " the current by \ scriptstyle { \ pi / 2 } radians for an inductive reactance.
