電気抵抗(でんきていこう)

でんきていこう
noun
electrical resistance
sciencetechnology
1. electrical resistance
The opposition that a material or circuit presents to the flow of electric current. Measured in ohms. A fundamental concept in physics and electrical engineering.
銅(どう)は電気抵抗(でんきていこう)が低(ひく)い。
Copper has low electrical resistance.
温度(おんど)が上(あ)がると電気抵抗(でんきていこう)も増加(ぞうか)する。
As temperature rises, electrical resistance also increases.
超伝導(ちょうでんどう)状態(じょうたい)では電気抵抗(でんきていこう)がゼロになるため、エネルギーの損失(そんしつ)なく電流(でんりゅう)を流(なが)すことができる。
In a superconducting state, electrical resistance becomes zero, allowing current to flow without energy loss.

A compound of 電気(でんき) (electricity) and 抵抗(ていこう) (resistance). The unit of measurement is オーム (ohm), represented by the symbol Ω. This is a standard term in physics education, appearing in middle school and high school science curricula.

Ohm's law (オームの法則(ほうそく)) states that voltage (電圧(でんあつ)) equals current (電流(でんりゅう)) times resistance (電気抵抗(でんきていこう)).

Common collocations

Similar words

  • 抵抗(ていこう): resistance — the general term, also used as a component name (resistor)
  • 抵抗器(ていこうき): resistor — the electronic component
  • 導電性(どうでんせい): electrical conductivity — the opposite property, how well a material conducts
general
Added 2026.4.23 22:29 · Revised 2026.9.2 13:02
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