...ure that the system is stable. Is it possible that a screw causing a short circuit can damage hard disk drives? My operating system’s drive is an SSD and it is running fine. The ones that “died” are regular 1 TB hard disk drives. 短路会损坏硬盘吗? 答案 超级用户贡献者davidsch...
... cable. To allow it to turn on like that, there needs to be some sort of circuit in the monitor that remains on and active to watch for the signal. Monitors already have such a circuit, but turning them off turns that circuit off as well. To use that circuit, you need to leave some electricity in ...
...失有关。 什么是电位差(potential difference)? In an electrical circuit, the potential difference between any two points in the circuit is the energy lost by a coulomb of charge as it travels between those two points. Potential difference can be measured using a voltmeter, and it is exp...
...便它们之间都具有相同的电位差。 什么是串联电路(series circuits)? 在串联电路中,元件之间没有连接。然后,根据电荷守恒定律(基尔霍夫第一定律),它们有相同的电流流过。如果电路在任何一点断开,电流将完全停止流过...
... 什么是抵抗(resistance)? The resistance ( ) of a component in a circuit is the potential difference ( ) across the component divided by the current ( ) through the component: 如果在由交流电供电的电路上加一个电阻器,电流的变化将与电压的变化同时发生。 Cur...
...at causes them to oppose changes in current when they are connected in AC circuits. Reactance depends on the frequency of the AC current. For example, for a capacitor with capacitance in an AC circuit with a frequency , the capacitive reactance is given by For an inductor with inductance ,...
... in one direction. As the electr*** flow through various components in the circuit, they lose their electrical energy. DC power refers to the amount of energy dissipated per second by a coulomb of electr***, as they travel between two points in a circuit. In a DC circuit, if a component has a po...
... different types of inductors When an inductor is connected to an electric circuit, a current flows through the coils in the conductor. Since magnetic fields form around moving charges, a magnetic field forms inside the coil. If the magnetic flux through the coil is given by , and if the coil has...
... 下面的视频解释了继电器的工作原理: 什么是断路器(a circuit breaker)? 断路器是在检测到大电流时关闭电路的装置。在此过程中,断路器断路器可以使用电磁铁或双金属片来断开电路。断路器通常用在家庭中,以确保非常大的...
...一个串联RLC电路。在这里,我们分析了以下电路: An AC circuit containing a resistor, a capacitor and an inductor To recap, the capacitor has a capacitive reactance ( ) given by . The inductor has an inductive reactance ( ) given by . We saw that the magnitude of the total ...