law of electromagnetic induction

简明释义

电磁感应定律

英英释义

例句

1.In physics classes, students learn about the law of electromagnetic induction (电磁感应定律) through experiments with coils and magnets.

在物理课上，学生通过线圈和磁铁的实验学习电磁感应定律（电磁感应定律）。

2.The law of electromagnetic induction (电磁感应定律) is crucial for understanding how inductors work in electronic circuits.

理解电子电路中电感器的工作原理至关重要，这与电磁感应定律（电磁感应定律）密切相关。

3.The law of electromagnetic induction (电磁感应定律) explains why electric currents are generated when a conductor moves through a magnetic field.

当导体在磁场中移动时，电磁感应定律（电磁感应定律）解释了为什么会产生电流。

4.The principle behind electric generators is based on the law of electromagnetic induction (电磁感应定律), which states that a changing magnetic field can induce an electric current.

电动机的原理基于电磁感应定律（电磁感应定律），该定律指出变化的磁场可以感应出电流。

5.Engineers use the law of electromagnetic induction (电磁感应定律) to design transformers that efficiently transfer electricity.

工程师利用电磁感应定律（电磁感应定律）设计高效的变压器来传输电力。

作文

The law of electromagnetic induction is one of the fundamental principles of physics that describes how electric currents can be generated by changing magnetic fields. This principle was first discovered by Michael Faraday in the 19th century and has since become a cornerstone of modern electrical engineering and technology. Understanding this law is crucial for anyone studying physics or working in fields that involve electricity and magnetism.To grasp the significance of the law of electromagnetic induction, we must first explore its basic concept. The law states that a change in the magnetic field within a closed loop induces an electromotive force (EMF) in the wire that forms the loop. This induced EMF generates an electric current if the circuit is closed. Essentially, when a conductor, such as a copper wire, experiences a change in the magnetic environment around it, electrons within the conductor are forced to move, creating an electric current.One of the most common applications of the law of electromagnetic induction is in electric generators. Generators convert mechanical energy into electrical energy by rotating coils of wire within a magnetic field. As the coils turn, they experience changes in the magnetic field, which induces an EMF according to Faraday’s law of induction. This process allows us to generate electricity on a large scale, powering homes, industries, and cities.Another important application is in transformers, which are essential for transmitting electricity over long distances. Transformers work on the principle of electromagnetic induction, allowing us to step up or step down voltage levels efficiently. By using the law of electromagnetic induction, we can transfer electrical energy from one circuit to another, making it possible to deliver electricity to consumers at safe voltage levels.In addition to these applications, the law of electromagnetic induction also plays a vital role in various technologies, including induction cooktops, magnetic resonance imaging (MRI), and wireless charging systems. In induction cooktops, for instance, the changing magnetic fields induce currents in the cookware, generating heat directly in the pot or pan. This method is not only efficient but also provides precise temperature control, making cooking more convenient.Furthermore, the law of electromagnetic induction has profound implications for our understanding of the relationship between electricity and magnetism. It illustrates how these two fundamental forces are interconnected and how they can influence each other. This relationship is encapsulated in Maxwell's equations, which describe the behavior of electric and magnetic fields and their interactions.In conclusion, the law of electromagnetic induction is a pivotal concept in physics that has transformed our world through its numerous applications in technology and industry. By understanding this law, we gain insight into the workings of electric generators, transformers, and various modern devices that rely on electromagnetic principles. As we continue to advance in science and technology, the law of electromagnetic induction will undoubtedly remain a key area of study, driving innovation and enhancing our understanding of the universe around us.

电磁感应定律是物理学的基本原理之一，描述了如何通过变化的磁场产生电流。这个原理最早是由迈克尔·法拉第在19世纪发现的，至今已成为现代电气工程和技术的基石。理解这一法律对于任何学习物理或在涉及电和磁的领域工作的人来说都是至关重要的。要掌握电磁感应定律的重要性，我们必须首先探讨其基本概念。该定律指出，闭合回路内的磁场变化会在形成回路的导线中感应出电动势（EMF）。这种感应的电动势在电路闭合时会产生电流。本质上，当导体（如铜线）经历周围磁环境的变化时，导体内的电子会被迫移动，从而产生电流。电磁感应定律最常见的应用之一是发电机。发电机通过在磁场中旋转线圈将机械能转化为电能。当线圈转动时，它们会经历磁场的变化，根据法拉第的感应定律感应出电动势。这个过程使我们能够大规模地发电，为家庭、工业和城市提供电力。另一个重要的应用是变压器，这对于长距离传输电力至关重要。变压器基于电磁感应的原理，使我们能够高效地升压或降压。通过使用电磁感应定律，我们可以将电能从一个电路转移到另一个电路，使其能够以安全的电压水平供消费者使用。除了这些应用，电磁感应定律还在各种技术中发挥着重要作用，包括感应炉、磁共振成像（MRI）和无线充电系统。例如，在感应炉中，变化的磁场在炊具中感应出电流，直接产生热量。这种方法不仅高效，而且提供精确的温度控制，使烹饪更加方便。此外，电磁感应定律对我们理解电与磁之间的关系具有深远的影响。它说明了这两种基本力量是如何相互关联并相互影响的。这种关系体现在麦克斯韦方程组中，描述了电场和磁场的行为及其相互作用。总之，电磁感应定律是物理学中的关键概念，通过其在技术和工业中的众多应用，改变了我们的世界。通过理解这一法律，我们可以深入了解电动发电机、变压器以及依赖电磁原理的各种现代设备的工作原理。随着我们在科学和技术上的不断进步，电磁感应定律无疑将继续成为研究的关键领域，推动创新并增强我们对周围宇宙的理解。