For example, if a 300- ohm resistor is attached across the terminals of a 12-volt battery, then a current of 12 / 300 = 0.04 amperes flows through that resistor. The ohm (symbol: Ω) is the SI unit of electrical …

Jun 13, 2021 · A resistor (also known as an electrical resistor) is defined as a two-terminal passive electrical element that provides electrical resistance to current flow. Resistance is a measure of the …

一、电阻的定义与核心作用 电阻是电子电路中用于 限制电流、分压、调节信号电平、消耗功率 的基础被动元件，其阻值（Resistance）单位为欧姆（Ω）。其核心作用可归纳为：限流保护：防止元器件过 …

Jul 7, 2025 · A resistor is a passive electronic component designed to limit or regulate the flow of electrical current in a circuit. Resistors play a critical role in functions like dividing voltage, controlling …

resistor是英语名词，译为“电阻器”，英式发音为 [rɪˈzɪstə (r)]，美式发音为。 该术语定义为电路中提供电阻的元件，用于限制电流、调整电压或消耗电能。 电阻器通过阻碍电流流动维持电路稳定运行，按 …

Apr 30, 2025 · So what exactly do they do, and how does a resistor work? In this beginner-friendly guide, we answer that question and explore everything you need to know about resistors—including …

Sep 26, 2025 · resistor, electrical component that opposes the flow of either direct or alternating current, employed to protect, operate, or control the circuit.

Jul 23, 2025 · The resistor can be defined as a passive electronic component with two terminals that produce electrical resistance to the flow of current in a circuit. It is measured in ohm (Ω).

Sep 2, 2025 · 电阻器 （Resistor），泛指所有用以产生 电阻 的 电子 或 电机 配件。 电阻器的运作跟随 欧姆定律，其 电阻值 定义为其 电压 与 电流 相除所得的 比值。

A resistor is a passive two-terminal electrical component that limits the current flowing in electrical or electronic circuits. Its property to resist the flow of current is called resistance, expressed in ohm (Ω), …