Om (or Aum; listen ⓘ; Sanskrit: ॐ, ओम्, romanized: Oṃ, Auṃ, ISO 15919: Ōṁ) is a polysemous symbol representing a sacred sound, syllable, mantra, and invocation in Hinduism. [1][2] Its written form is the most important symbol in the Hindu religion. [3] .

在 電路學 裡， 欧姆定律 （英語： Ohm's law）表明：定溫下， 电导体 两端的 电壓 与通过电导体的 电流 成正比 [1]。 数学表达式 为： 因此，對於任意电导体（電路 、 電路元件 、甚至 電阻器），電阻 可定義為此 正比关系 的比例常数 [1]： 且可得到下列方程式： 不論電流、電壓為何， 電阻 定義均為電壓除以電流。 此外，任何电导体都有电阻，即使 超导体 在一般温度下也具有微小的电阻。 然而並不是每一種元件都遵守歐姆定律，此定律是經過多次實驗而推斷的法則，只有 …

The ohm is defined as an electrical resistance between two points of a conductor when a constant potential difference of one volt (V), applied to these points, produces in the conductor a current of one ampere (A), the conductor not being the seat of any electromotive force.

Ohm单位以George Simon Ohm命名。 1 Ω = 1V / 1A = 1J⋅1S / 1C 2. 欧姆电阻表

The ohm symbol, Ω, is the unit of electrical resistance in the International System of Units (SI). It is named after German physicist Georg Ohm, who discovered Ohm’s Law that describes the relationship between current, voltage, and resistance in an electrical circuit.

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2025年1月2日 · The symbol for ohm, the unit of electrical resistance in the International System of Units. The Unicode Standard states that Ω (U+2126 OHM SIGN) is included in Unicode only for backward compatibility reasons. Ω (U+03A9 GREEK CAPITAL LETTER OMEGA) is preferred to represent ohms. Ω on Wikipedia.

Ohm is the unit of electrical resistance. It is used in the International System of Units (SI). The Ohm symbol is represented by the Greek capital letter omega.

Discover the meaning, uses, and examples of the Ohm symbol (Ω). Learn how and where to use this symbol effectively.

Ohmmeter is a measurement device that measures resistance. Ohm is an electrical unit of resistance. The Ohm symbol is Ω.