noun
Technical term for a variable resistor used to control current. Common in electronics and physics contexts.
実験でレオスタットを使って電流を調整した。
I adjusted the current using a rheostat in the experiment.
可変抵抗器 is the native Japanese term for a variable resistor, while レオスタット is the loanword specifically for a rheostat, a type of variable resistor.
Loanword from English 'rheostat'.