electromagnetic induction

简明释义

电磁感应

英英释义

例句

1.Scientists study electromagnetic induction to improve wireless charging technologies.

科学家研究电磁感应以改进无线充电技术。

2.The phenomenon of electromagnetic induction is crucial for the operation of many household appliances.

许多家用电器的运行都依赖于电磁感应现象。

3.The principle of electromagnetic induction is used in electric generators to convert mechanical energy into electrical energy.

电动机利用电磁感应原理将机械能转化为电能。

4.Transformers rely on electromagnetic induction to step up or step down voltage levels in power lines.

变压器依赖于电磁感应在电力线路中升高或降低电压水平。

5.In physics classes, students learn about electromagnetic induction through hands-on experiments.

在物理课上，学生通过动手实验学习电磁感应。

作文

Electromagnetic induction is a fundamental principle in physics that describes the process by which a changing magnetic field can generate an electric current in a conductor. This phenomenon was first discovered by Michael Faraday in the early 19th century and has since become a cornerstone of modern electrical engineering. The principle of electromagnetic induction (电磁感应) is not only crucial for understanding how electrical devices work but also plays a significant role in various applications, including power generation, transformers, and electric motors.To understand electromagnetic induction (电磁感应), it is essential to grasp the concept of magnetic fields and their interaction with electric currents. A magnetic field is generated by moving electric charges, and when this magnetic field changes over time, it induces an electromotive force (EMF) in nearby conductors. This induced EMF can drive an electric current if the circuit is closed. Faraday's law of induction quantitatively describes this relationship, stating that the induced EMF is proportional to the rate of change of the magnetic flux through a circuit.One of the most common applications of electromagnetic induction (电磁感应) is in the generation of electricity. Power plants often use turbines to rotate magnets within coils of wire, creating a changing magnetic field that induces an electric current. This process is at the heart of how electricity is produced on a large scale and distributed to homes and businesses. Without electromagnetic induction (电磁感应), our modern society would not have access to the vast amounts of electrical energy that we rely on every day.Another important application of electromagnetic induction (电磁感应) is found in transformers. Transformers are devices that transfer electrical energy between two or more circuits through inductively coupled conductors. They rely on the principle of electromagnetic induction (电磁感应) to step up or step down voltage levels, making the transmission of electricity over long distances more efficient. By increasing the voltage, transformers reduce the current flowing through the wires, which minimizes energy loss due to resistance.Electric motors also utilize electromagnetic induction (电磁感应) to convert electrical energy into mechanical energy. In an electric motor, a current-carrying coil is placed within a magnetic field. As the current flows through the coil, it experiences a force due to the magnetic field, causing it to rotate. This rotational motion can then be harnessed to perform work, such as turning the blades of a fan or driving a vehicle.In conclusion, electromagnetic induction (电磁感应) is a vital concept in both physics and engineering. It explains how electric currents can be generated from changing magnetic fields and has numerous practical applications in our daily lives. From electricity generation in power plants to the operation of transformers and electric motors, the principles of electromagnetic induction (电磁感应) are integral to the functioning of modern technology. As we continue to advance in technology and seek more efficient energy solutions, understanding electromagnetic induction (电磁感应) will remain essential for future innovations in electrical engineering and renewable energy sources.

电磁感应是物理学中的一个基本原理，描述了变化的磁场如何在导体中产生电流的过程。这个现象最早是由迈克尔·法拉第在19世纪初发现的，后来成为现代电气工程的基石。电磁感应（电磁感应）原理不仅对理解电气设备的工作原理至关重要，而且在电力生成、变压器和电动机等各种应用中也发挥着重要作用。要理解电磁感应（电磁感应），首先需要掌握磁场及其与电流的相互作用的概念。磁场是由运动的电荷产生的，当这个磁场随时间变化时，它会在附近的导体中感应出电动势（EMF）。如果电路闭合，这种感应出的电动势可以驱动电流。法拉第电磁感应定律定量描述了这种关系，指出感应电动势与通过电路的磁通量变化率成正比。电磁感应（电磁感应）的一个常见应用是在电力生成中。发电厂通常使用涡轮机使磁铁在电线圈内旋转，产生一个变化的磁场，从而感应出电流。这个过程是如何在大规模上生产电力并分配给家庭和企业的核心。如果没有电磁感应（电磁感应），我们的现代社会将无法获得我们每天依赖的大量电能。电磁感应（电磁感应）的另一个重要应用体现在变压器中。变压器是将电能在两个或多个电路之间通过感应耦合的导体进行传输的设备。它们依赖于电磁感应（电磁感应）原理来升高或降低电压水平，使长距离电力传输更加高效。通过提高电压，变压器减少了流经电线的电流，从而最小化因电阻造成的能量损失。电动机也利用电磁感应（电磁感应）将电能转化为机械能。在电动机中，带电流的线圈放置在磁场中。当电流流过线圈时，由于磁场的作用，它会受到一种力，从而导致其旋转。这个旋转运动可以被用来执行工作，例如转动风扇的叶片或驱动车辆。总之，电磁感应（电磁感应）是物理学和工程学中的一个重要概念。它解释了如何从变化的磁场中产生电流，并在我们日常生活中有许多实际应用。从发电厂的电力生成到变压器和电动机的运作，电磁感应（电磁感应）原理是现代技术运作的不可或缺的一部分。随着我们在技术上不断进步，寻求更高效的能源解决方案，理解电磁感应（电磁感应）将继续对未来电气工程和可再生能源的创新至关重要。