induced current

简明释义

感应电流

英英释义

例句

1.When a magnet is moved through a coil of wire, an induced current 感应电流 is generated in the wire.

当一个磁铁在一圈导线中移动时，会在导线中产生一个induced current 感应电流。

2.An induced current 感应电流 can be measured using a galvanometer.

可以使用电流计来测量induced current 感应电流。

3.The strength of the induced current 感应电流 depends on the rate at which the magnetic field changes.

这个induced current 感应电流的强度取决于磁场变化的速率。

4.The induced current 感应电流 can create a magnetic field that opposes the motion of the magnet.

这个induced current 感应电流可以产生一个与磁铁运动相反的磁场。

5.In transformers, the primary coil generates an induced current 感应电流 in the secondary coil.

在变压器中，初级线圈在次级线圈中产生一个induced current 感应电流。

作文

The phenomenon of induced current is a fascinating aspect of electromagnetism that plays a crucial role in various technologies we use today. To understand induced current, we first need to explore the principles of electromagnetic induction, which was discovered by Michael Faraday in the 19th century. He found that a changing magnetic field can produce an electric current in a conductor. This principle is foundational in the operation of many electrical devices, including generators and transformers.When a conductor, such as a copper wire, is exposed to a changing magnetic field, the motion of the magnetic field relative to the conductor induces an electromotive force (EMF). This EMF causes electrons in the conductor to move, resulting in an electric current. This current is what we refer to as induced current (感应电流). The direction of this current depends on the direction of the changing magnetic field, which can be determined using Fleming's right-hand rule.In practical applications, induced current is utilized in electric generators. When a coil of wire is rotated in a magnetic field, it experiences a change in the magnetic flux. As a result, an induced current flows through the wire, which can then be harnessed to power electrical devices. This process is fundamental to the generation of electricity in power plants, where large turbines rotate within magnetic fields to produce significant amounts of induced current.Moreover, transformers rely on the principle of induced current to transfer electrical energy between circuits. In a transformer, an alternating current in one coil generates a changing magnetic field, which induces a current in a nearby coil. This allows for the efficient transmission of electricity over long distances by stepping up or stepping down voltage levels.However, induced current is not always beneficial. In some cases, it can lead to unwanted effects, such as eddy currents. These are loops of electric current induced within conductors by a changing magnetic field, which can cause energy losses in the form of heat. Engineers must consider these factors when designing electrical systems to minimize energy wastage and improve efficiency.In conclusion, understanding induced current is essential for anyone interested in the field of electronics and electrical engineering. It is a key concept that underpins many modern technologies, from power generation to electrical devices. By grasping the principles of electromagnetic induction, we can better appreciate how induced current shapes our daily lives and drives innovation in the energy sector.

感应电流的现象是电磁学中一个迷人的方面，在我们今天使用的各种技术中发挥着关键作用。要理解感应电流，我们首先需要探讨电磁感应的原理，这一原理是在19世纪由迈克尔·法拉第发现的。他发现变化的磁场可以在导体中产生电流。这个原理是许多电气设备运作的基础，包括发电机和变压器。当一个导体，如铜线，暴露于变化的磁场中时，导体相对于磁场的运动会诱发电动势（EMF）。这个电动势导致导体中的电子移动，从而产生电流。这个电流就是我们所称的感应电流（induced current）。该电流的方向取决于变化的磁场的方向，可以通过弗莱明右手定则来确定。在实际应用中，感应电流被用于电动发电机。当一根线圈在磁场中旋转时，它会经历磁通量的变化。因此，感应电流会流过这根线，这样就可以利用它为电气设备供电。这个过程是电力厂发电的基础，大型涡轮机在磁场中旋转以产生大量的感应电流。此外，变压器依赖于感应电流的原理在电路之间传递电能。在变压器中，一个线圈中的交流电流产生一个变化的磁场，该磁场在附近的另一个线圈中诱发电流。这使得通过提高或降低电压水平在长距离内高效传输电力成为可能。然而，感应电流并不总是有利的。在某些情况下，它可能导致不必要的效果，例如涡流。这些是由变化的磁场诱发的在导体内部形成的电流环，会导致以热量的形式损失能量。在设计电气系统时，工程师必须考虑这些因素，以最小化能量浪费并提高效率。总之，理解感应电流对任何对电子和电气工程领域感兴趣的人来说都是至关重要的。它是支撑许多现代技术的关键概念，从发电到电气设备。通过掌握电磁感应的原理，我们可以更好地欣赏感应电流如何塑造我们的日常生活，并推动能源领域的创新。