noun
reactance
Technical term in electrical engineering; the opposition to alternating current caused by inductance or capacitance.
コイルのリアクタンスは周波数に比例する。
The reactance of a coil is proportional to the frequency.
Resistance is the opposition to current in a DC circuit or the real part of impedance, while reactance is the imaginary part.
Borrowed from English 'reactance'.