internal electromotive force

简明释义

内电动势

英英释义

例句

1.A higher internal electromotive force 内电动势 usually indicates a better quality battery.

更高的内电动势内电动势通常表示电池质量更好。

2.In a solar panel, the internal electromotive force 内电动势 generated can vary based on sunlight intensity.

在太阳能电池板中，产生的内电动势内电动势可能会根据阳光强度而变化。

3.When measuring the internal electromotive force 内电动势 of a cell, you can use a voltmeter across its terminals.

测量电池的内电动势内电动势时，可以在其端子之间使用伏特计。

4.The battery's internal electromotive force 内电动势 determines how much voltage it can provide to the circuit.

电池的内电动势内电动势决定了它能为电路提供多少电压。

5.The internal electromotive force 内电动势 can decrease over time due to chemical reactions inside the battery.

由于电池内部的化学反应，内电动势内电动势可能会随时间降低。

作文

The concept of internal electromotive force plays a crucial role in the field of electrical engineering and physics. To understand this term, we must first break down its components. The term 'electromotive force' (EMF) refers to the voltage generated by a source such as a battery or generator when no current is flowing. It is essentially the energy provided per unit charge that moves through the circuit. When we add the word 'internal,' we are focusing on the forces and factors that occur within the source itself, particularly how they affect the overall performance and efficiency of the device.In practical terms, internal electromotive force can be thought of as the inherent voltage that exists within a power source due to its chemical reactions or physical properties. For instance, in a battery, the internal electromotive force is generated through electrochemical reactions between the anode and cathode. This internal process is vital because it determines how effectively the battery can deliver energy to an external load.One of the key implications of understanding internal electromotive force is its relationship with internal resistance. Every power source has some level of internal resistance, which can hinder the flow of current. When current flows from the battery to a circuit, some energy is lost due to this internal resistance, resulting in a drop in voltage. Therefore, the actual voltage available to an external circuit can be significantly lower than the internal electromotive force of the battery itself. This phenomenon is critical for engineers and designers when creating efficient electrical systems.Moreover, the internal electromotive force is not a fixed value; it can change based on various factors including temperature, state of charge, and the age of the battery. As a battery discharges, its internal electromotive force typically decreases, which is why batteries lose their ability to hold a charge over time. Understanding these dynamics helps in predicting battery life and performance, which is essential for applications ranging from mobile phones to electric vehicles.In summary, the term internal electromotive force encapsulates the vital concept of the voltage present within a power source, influenced by internal factors and processes. It is a fundamental aspect of electrical engineering that impacts the design and efficiency of electrical systems. By studying internal electromotive force, engineers can develop better batteries and power sources, ultimately leading to advancements in technology and energy efficiency. Recognizing the importance of this concept allows for improved designs and innovations in a variety of fields, making it an essential topic for anyone interested in electrical engineering and technology.

“内在电动势”这一概念在电气工程和物理学领域中扮演着至关重要的角色。要理解这个术语，我们首先需要拆解它的组成部分。“电动势”（EMF）指的是当没有电流流动时，电池或发电机等源产生的电压。它本质上是每单位电荷在电路中移动所提供的能量。当我们加入“内在”这个词时，我们关注的是源内部发生的力量和因素，特别是它们如何影响设备的整体性能和效率。在实际操作中，“内在电动势”可以被视为由于其化学反应或物理特性而存在于电源内部的固有电压。例如，在电池中，“内在电动势”是通过阳极和阴极之间的电化学反应生成的。这一内部过程至关重要，因为它决定了电池向外部负载有效传递能量的能力。理解“内在电动势”的一个关键意义是它与内阻的关系。每个电源都有一定程度的内阻，这可能会阻碍电流的流动。当电流从电池流向电路时，由于这种内阻，一些能量会损失，导致电压下降。因此，实际上可用于外部电路的电压可能显著低于电池本身的“内在电动势”。这一现象对工程师和设计师在创建高效电气系统时至关重要。此外，“内在电动势”并不是一个固定值；它可以根据温度、充电状态和电池老化等各种因素而变化。当电池放电时，其“内在电动势”通常会降低，这就是为什么电池随着时间的推移失去保持电荷能力的原因。理解这些动态有助于预测电池的寿命和性能，这对从手机到电动车辆的应用至关重要。总之，“内在电动势”这一术语概括了电源内部存在的电压的关键概念，受内部因素和过程的影响。这是电气工程的一个基本方面，影响电气系统的设计和效率。通过研究“内在电动势”，工程师可以开发出更好的电池和电源，从而最终推动技术和能源效率的进步。认识到这一概念的重要性使得在各个领域的设计和创新得以改善，因此对于任何对电气工程和技术感兴趣的人来说，都是一个必不可少的主题。