electric motive force

简明释义

电动势

英英释义

例句

1.A generator converts mechanical energy into electric motive force 电动势.

发电机将机械能转换为电动势 电动势。

2.The battery provides the electric motive force 电动势 necessary to power the flashlight.

电池提供了使手电筒工作的电动势 电动势。

3.In a circuit, the electric motive force 电动势 drives the flow of current.

在电路中，电动势 电动势 驱动电流的流动。

4.The electric motive force 电动势 generated by the solar panels is converted into usable electricity.

太阳能电池板产生的电动势 电动势 被转换为可用的电力。

5.Understanding the electric motive force 电动势 is crucial for designing efficient electrical systems.

理解电动势 电动势 对于设计高效的电气系统至关重要。

作文

In the realm of physics and electrical engineering, the term electric motive force refers to the energy provided by an electric source that drives current through a circuit. This concept is fundamental to understanding how electrical systems operate and is often represented by the symbol EMF (Electromotive Force). The electric motive force can be thought of as the 'push' that moves electrons through a conductor, enabling the flow of electricity that powers our devices and appliances. To better grasp the significance of electric motive force, it is essential to differentiate it from other related concepts like voltage and current. Voltage is the potential difference between two points in an electrical circuit, while current is the flow of electric charge. The electric motive force, on the other hand, is the cause of this flow. It is generated by various sources, including batteries, generators, and solar cells. Each of these sources converts different forms of energy into electrical energy, thus providing the necessary electric motive force to sustain the current.For example, when a battery is used to power a flashlight, the chemical energy stored within the battery undergoes a transformation into electrical energy. This transformation creates a potential difference across the terminals of the battery, resulting in a measurable electric motive force. As the circuit is completed by connecting the flashlight bulb, the electric motive force causes electrons to flow through the wires, illuminating the bulb. Without the presence of this driving force, the circuit would remain inactive, and the flashlight would not function.Another important aspect of electric motive force is its role in determining the efficiency of electrical systems. The greater the electric motive force, the more current can flow through a circuit, assuming the resistance remains constant. This relationship is described by Ohm's Law, which states that current (I) is equal to the electric motive force (V) divided by resistance (R), or I = V/R. Therefore, engineers and designers must carefully consider the electric motive force when creating electrical systems to ensure they meet the required performance standards.Moreover, the concept of electric motive force extends beyond simple circuits. In larger systems, such as power grids, the electric motive force plays a critical role in the transmission of electricity over long distances. High-voltage transmission lines are designed to minimize energy loss, and the electric motive force generated by power plants must be sufficient to overcome these losses and deliver electricity to consumers efficiently.In conclusion, the electric motive force is a fundamental concept in the study of electricity. It serves as the driving force behind the movement of electrons in a circuit and is crucial for the operation of electrical devices. Understanding the principles of electric motive force allows individuals to appreciate the complexities of electrical systems and their applications in everyday life. From powering household appliances to enabling industrial machinery, the importance of electric motive force cannot be overstated, as it is at the heart of modern technology and innovation.

在物理学和电气工程领域，术语电动势指的是由电源提供的能量，该能量驱动电流通过电路。这个概念对于理解电气系统的运行至关重要，通常用符号EMF（电动势）表示。电动势可以被视为推动电子通过导体的“推力”，使电流流动，从而为我们的设备和电器供电。为了更好地理解电动势的重要性，有必要将其与其他相关概念区分开来，如电压和电流。电压是电路中两点之间的电位差，而电流是电荷的流动。另一方面，电动势是这种流动的原因。它由各种来源生成，包括电池、发电机和太阳能电池。每一个这些来源都将不同形式的能量转化为电能，从而提供必要的电动势以维持电流。例如，当电池用于为手电筒供电时，电池内储存的化学能发生转化为电能。这种转化在电池的端子之间产生了可测量的电位差，从而产生了可测量的电动势。当通过连接手电筒灯泡完成电路时，电动势使电子通过电线流动，点亮灯泡。如果没有这种推动力，电路将保持不活跃，手电筒将无法正常工作。电动势的另一个重要方面是它在确定电气系统效率中的作用。电动势越大，在电阻保持不变的情况下，电路中流动的电流就越大。这个关系由欧姆定律描述，该定律指出电流（I）等于电动势（V）除以电阻（R），即I = V/R。因此，工程师和设计师在创建电气系统时必须仔细考虑电动势，以确保它们满足所需的性能标准。此外，电动势的概念超出了简单电路的范围。在更大的系统中，例如电网，电动势在长距离输电中发挥着关键作用。高压输电线旨在最小化能量损失，而发电厂生成的电动势必须足够克服这些损失，并有效地将电力传递给消费者。总之，电动势是电力研究中的一个基本概念。它作为电路中电子运动的推动力，对于电气设备的操作至关重要。理解电动势的原理使个人能够欣赏电气系统及其在日常生活中的应用的复杂性。从为家用电器供电到使工业机械运转，电动势的重要性不容低估，因为它是现代技术和创新的核心。