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| '''Magnetic reactance''' is the parameter of a passive [[magnetic circuit]] or its element, which is equal to the square root of the difference of squares of the full and effective magnetic resistance for a [[magnetic current]], taken with the sign plus, if the magnetic current lags behind the [[Magnetic tension force|magnetic tension]] in phase, and with the sign minus, if the magnetic current leads the magnetic tension in phase.
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| Magnetic reactance <ref>{{Cite book|
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| author=Pohl, R. W.|
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| title=Elektrizitätslehre| | |
| location=Berlin-Gottingen-Heidelberg|
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| publisher=Springer-Verlag|
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| year=1960|
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| language=German}}
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| </ref><ref>{{Cite book|
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| author=Popov, V. P.|
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| title=The Principles of Theory of Circuits|
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| publisher=M.: Higher School|
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| year=1985|
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| language=Russian}}</ref><ref>{{Cite book|
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| author=Küpfmüller, K.|
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| title=Einführung in die theoretische Elektrotechnik|
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| location=Berlin-Gottingen-Heidelberg|
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| publisher=Springer-Verlag|
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| year=1959|
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| language=German}}</ref> is the component of [[complex magnetic impedance]] of the [[alternating current]] circuit, which produces the phase shift between a magnetic current and magnetic tension in the circuit. It is measured in units of <math>\tfrac{1}{\Omega}</math> and is denoted by <math>x</math> (or <math>X</math>). It may be inductive <math>x_L = \omega L_M</math> or capacitive <math>x_C = \tfrac{1}{\omega C_M}</math>, where <math>\omega</math> is the [[angular frequency]] of a magnetic current, <math>L_M</math> is the [[magnetic inductivity]] of a circuit, <math>C_M</math> is the [[magnetic capacitivity]] of a circuit. The magnetic reactance of an undeveloped circuit with the inductivity and the capacitivity, which are connected in series, is equal: <math>x = x_L - x_C = \omega L_M - \frac{1}{\omega C_M}</math> . If <math>x_L = x_C</math>, then the sum reactance <math>x = 0</math> and [[resonance]] takes place in the circuit. In the general case <math>x = \sqrt{z^2 - r^2}</math>. When an [[energy loss]] is absent (<math>r = 0</math>) <math>x = z</math>. The angle of the phase shift in a magnetic circuit <math>\phi = \arctan{\frac{x}{r}}</math>. On a complex plane, the magnetic reactance appears as the side of the resistance triangle for circuit of an alternating current.
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| ==References==
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| <references />
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| {{DEFAULTSORT:Magnetic Reactance}}
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| [[Category:Electromagnetism]]
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| {{Physics-stub}}
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Latest revision as of 23:00, 16 October 2014
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