induced electromotive force

简明释义

感应电动势

英英释义

例句

1.The generator produces electricity by creating an induced electromotive force in the coils of wire.

发电机通过在电线圈中产生感应电动势来产生电力。

2.The concept of induced electromotive force is crucial in understanding how transformers work.

理解变压器的工作原理时，感应电动势的概念至关重要。

3.Faraday's law states that the magnitude of induced electromotive force is proportional to the rate of change of magnetic flux.

法拉第定律指出，感应电动势的大小与磁通量变化的速率成正比。

4.In electric vehicles, induced electromotive force plays a key role in regenerative braking systems.

在电动汽车中，感应电动势在再生制动系统中起着关键作用。

5.When a magnet moves through a coil, it generates an induced electromotive force that can power a light bulb.

当磁铁穿过线圈时，它会产生一个感应电动势，可以为灯泡供电。

作文

The concept of induced electromotive force plays a crucial role in the field of electromagnetism and is fundamental to understanding how electrical energy can be generated. In simple terms, induced electromotive force refers to the voltage generated in a conductor when it is exposed to a changing magnetic field. This phenomenon is a direct consequence of Faraday's law of electromagnetic induction, which states that a change in magnetic flux through a circuit induces an electromotive force in that circuit. To illustrate this concept, consider a simple experiment involving a coil of wire and a magnet. When the magnet is moved toward the coil, the magnetic field around the coil changes. According to Faraday's law, this change in magnetic field creates a induced electromotive force within the coil, causing an electric current to flow if the circuit is closed. Conversely, when the magnet is moved away from the coil, the direction of the induced current reverses, demonstrating the principle of Lenz's law, which states that the direction of the induced current will always oppose the change in magnetic flux.The applications of induced electromotive force are vast and significant in modern technology. For instance, electric generators operate on this principle. In a generator, mechanical energy is used to rotate a coil within a magnetic field, leading to the continuous generation of alternating current (AC) or direct current (DC). This process is essential for powering homes, industries, and various electronic devices.Moreover, transformers, which are used to transfer electrical energy between circuits, also rely on the principles of induced electromotive force. By varying the number of turns in the primary and secondary coils, transformers can increase or decrease voltage levels efficiently, making long-distance power transmission feasible and reducing energy losses.In addition to practical applications, understanding induced electromotive force is vital for students and professionals in physics and engineering. It allows them to comprehend how energy conversion occurs in various systems and encourages the development of innovative technologies that harness electromagnetic principles. As society increasingly relies on electrical energy, mastering concepts like induced electromotive force becomes essential for addressing future energy challenges.In conclusion, induced electromotive force is a fundamental concept in electromagnetism that describes the generation of voltage in a conductor due to a changing magnetic field. Its implications extend beyond theoretical understanding, influencing the design and operation of numerous electrical devices and systems. By grasping the principles behind induced electromotive force, individuals can contribute to advancements in technology and energy efficiency, ultimately shaping the future of energy consumption and production.

“感应电动势”这一概念在电磁学领域中发挥着至关重要的作用，对于理解如何产生电能至关重要。简单来说，induced electromotive force（感应电动势）是指当导体暴露于变化的磁场时所产生的电压。这一现象是法拉第电磁感应定律的直接结果，该定律指出，电路中磁通量的变化会在该电路中感应出电动势。为了说明这一概念，可以考虑一个简单的实验，涉及到一根线圈和一个磁铁。当磁铁朝向线圈移动时，线圈周围的磁场发生变化。根据法拉第定律，这种磁场的变化在线圈内产生了induced electromotive force（感应电动势），如果电路是闭合的，就会导致电流流动。相反，当磁铁远离线圈移动时，感应电流的方向会发生反转，这表明了楞次定律的原理，即感应电流的方向总是会抵抗磁通量的变化。induced electromotive force（感应电动势）的应用广泛且在现代技术中具有重要意义。例如，发电机就是基于这一原理运作的。在发电机中，机械能被用来旋转一个处于磁场中的线圈，从而持续产生交流电（AC）或直流电（DC）。这一过程对于为家庭、工业和各种电子设备供电至关重要。此外，变压器也依赖于induced electromotive force（感应电动势）的原理，用于在电路之间转移电能。通过改变主、副线圈中的匝数，变压器可以有效地提高或降低电压水平，使得长距离电力传输成为可能，并减少能源损失。除了实际应用外，理解induced electromotive force（感应电动势）对物理和工程领域的学生和专业人士来说至关重要。它使他们能够理解各种系统中能量转换的发生，并鼓励开发利用电磁原理的创新技术。随着社会越来越依赖电能，掌握如induced electromotive force（感应电动势）这样的概念变得尤为重要，以应对未来的能源挑战。总之，induced electromotive force（感应电动势）是电磁学中的一个基本概念，描述了由于变化的磁场而在导体中产生电压的现象。其影响不仅限于理论理解，还影响着众多电气设备和系统的设计与运行。通过掌握induced electromotive force（感应电动势）背后的原理，个人可以为技术进步和能源效率的发展做出贡献，最终塑造未来的能源消费和生产。