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单词 Electrical Resistance
释义

Electrical Resistance

原声例句
经济学人-科技

A bolometer's electrical resistance depends on how hot it is.

辐射热测定器的电阻取决于它的热度。

VOA Standard 2015年7月合集

Their flexing can be controlled independently by measuring the electrical resistance of the wires.

可以通过测量线路的电阻来独立控制它们的屈伸动作。

TED演讲(音频版) 2015年2月合集

Therefore, I could design a circuit that would measure pressure by measuring electrical resistance.

这样我就可以设计一个测试压力的电路通过测量电阻。

精选英语短文

The all-in-one system of the new e-skin is composed of a transparent supercapacitor, stretchable strain sensors and snakelike electrical resistance.

新型电子皮肤的一体化系统由透明超级电容器、可伸缩应变传感器和蛇形电阻组成。

PBS趣味科普

Over the course of his experiments, Baxter obsevered a change in electrical resistance when the plants were harmed, or threatened with harm.

在他的实验过程中,Baxter 观察到当植物受到伤害或受到伤害威胁时电阻会发生变化。

科技智慧坊

Other methods include a potentiometer which uses  a resistive track and a wiper that results in a change in electrical resistance.

其他方法包括使用电阻轨道和滑动片的电位器,从而导致电阻发生变化。

趣味化学实验:Periodic Videos

Its boiling point is -269 degrees centigrade. But if you cool things with liquid Helium, you get very strange properties, for example, some materials lose their electrical resistance.

它的沸点是-269摄氏度。 但是如果你用液态氦冷却东西,你会得到非常奇怪的特性, 例如,一些材料会失去电阻。

中文百科

电阻 Electrical resistance and conductance

(重定向自Electrical Resistance)
处于均匀外电场的均匀截面导体(例如,电线)。
四端点量测技术可以用来准确地测量点2与点3之间的电阻。
绝缘体的电子能级。
电流对电压线图。理想电阻器和PN结二极管的V-I线分别以红色和黑色显示。

在电磁学里,电阻(英文:Resistance)是一个物体对于电流通过的阻碍能力,以方程序定义为

其中,R为电阻,V为物体两端的电压,I为通过物体的电流。

假设这物体具有均匀截面面积,则其电阻与电阻率、长度成正比,与截面面积成反比。

采用国际单位制,电阻的单位为欧姆(Ω,Ohm)。电阻的倒数为电导,单位为西门子(S)。

假设温度不变,则很多种物质会遵守欧姆定律,即这些物质所组成的物体,其电阻为常数,不跟电流或电压有关。称这些物质为「欧姆物质」;不遵守欧姆定律的物质为「非欧姆物质」。 电路符号常常用R来表示,例: R1、R02、R100等。

英语百科

Electrical resistance and conductance 电阻

(重定向自Electrical Resistance)
The hydraulic analogy compares electric current flowing through circuits to water flowing through pipes. When a pipe (left) is filled with hair (right), it takes a larger pressure to achieve the same flow of water. Pushing electric current through a large resistance is like pushing water through a pipe clogged with hair: It requires a larger push (electromotive force) to drive the same flow (electric current).
The current-voltage characteristics of four devices: Two resistors, a diode, and a battery. The horizontal axis is voltage drop, the vertical axis is current. Ohm's law is satisfied when the graph is a straight line through the origin. Therefore, the two resistors are ohmic, but the diode and battery are not.
A piece of resistive material with electrical contacts on both ends.
The IV curve of a non-ohmic device (purple).  The static resistance at point A is the inverse slope of line B through the origin. The differential resistance at A is the inverse slope of tangent line C.The IV curve of a component with negative differential resistance, an unusual phenomenon where the IV curve is non-monotonic.

The electrical resistance of an electrical conductor is a measure of the difficulty to pass an electric current through that conductor. The inverse quantity is electrical conductance, and is the ease with which an electric current passes. Electrical resistance shares some conceptual parallels with the notion of mechanical friction. The SI unit of electrical resistance is the ohm (Ω), while electrical conductance is measured in siemens (S).

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更新时间:2025/6/21 23:51:44