V2EX ohm

Ohm

定义 Definition

n. 电学中的电阻国际单位制单位,符号为 Ω。1 ohm 表示当导体两端电压为 1 volt、通过电流为 1 ampere 时的电阻。它常出现在欧姆定律、电路分析、电子元件规格和实验测量中。

发音 Pronunciation

/m/ 或 /om/

例句 Examples

This resistor is 10 ohms.
这个电阻是 10 欧姆。

In circuit analysis, resistance measured in ohms helps determine how much current will flow.
在电路分析中,用欧姆测量的电阻有助于判断会有多少电流通过。

词源 Etymology

来自德国物理学家 Georg Simon Ohm 的姓氏,他研究了电压、电流和电阻之间的关系。单位名称用于纪念他对电学基础理论的贡献。

相关词 Related Words

  • 国际单位制和计量学资料中用 ohm 表示电阻单位。
  • 电路分析、电子工程和普通物理教材中常用 ohm 描述电阻器、电线和负载的阻值。
  • 实验报告和仪器说明书中常以 ohms 或 Ω 记录测得的电阻值。
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