conduction current

简明释义

传导电流

英英释义

例句

1.When measuring resistance, it is important to understand how conduction current flows through materials.

在测量电阻时，了解导电电流如何通过材料流动是很重要的。

2.The flow of electrons in a metal wire is primarily due to conduction current.

金属线中的电子流动主要是由于导电电流。

3.During a thunderstorm, the conduction current in the atmosphere increases significantly.

在雷暴期间，大气中的导电电流显著增加。

4.The efficiency of electrical devices often depends on the conduction current they can handle.

电气设备的效率通常取决于它们能够承受的导电电流。

5.In semiconductors, the conduction current can be manipulated by changing the temperature.

在半导体中，通过改变温度可以操控导电电流。

作文

In the realm of physics and electrical engineering, understanding the concept of conduction current is essential for comprehending how electricity flows through different materials. The term conduction current refers to the flow of electric charge carriers, typically electrons, through a conductor due to an applied electric field. This phenomenon occurs in materials that have free electrons, such as metals, which allow for the efficient transfer of electrical energy.When we talk about conduction current, it is important to recognize its relationship with Ohm's Law, which states that the current (I) flowing through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R) of the conductor. Mathematically, this can be expressed as I = V/R. This equation highlights the fact that for a given voltage, the amount of conduction current that flows depends on the material's resistance. Different materials exhibit varying levels of conductivity, which affects the conduction current. For instance, copper is known for its high conductivity, making it a popular choice for electrical wiring. On the other hand, rubber is an insulator and does not allow conduction current to pass through easily. This distinction is critical in designing circuits and understanding how different components interact within an electrical system.The process of conduction current can also be influenced by temperature. As the temperature of a conductor increases, the atoms within the material vibrate more vigorously. This increased atomic movement can hinder the flow of electrons, thereby affecting the overall conduction current. In many conductive materials, this results in a positive temperature coefficient of resistance, meaning that as temperature rises, resistance increases, leading to a decrease in current flow.Moreover, in semiconductor materials, the behavior of conduction current can be manipulated through doping, which involves adding impurities to the material to enhance its conductivity. By introducing specific elements, engineers can create p-type or n-type semiconductors, which are crucial for modern electronic devices like transistors and diodes. These devices rely on the controlled flow of conduction current to function properly, allowing for the development of complex circuits and technologies.In summary, the concept of conduction current is fundamental in the study of electricity and electronics. It describes the flow of electric charge in conductive materials and is governed by principles such as Ohm's Law and the effects of temperature and material properties. Understanding conduction current is vital for anyone involved in electrical engineering, physics, or related fields, as it lays the groundwork for designing and analyzing electrical systems effectively. As technology continues to evolve, our grasp of conduction current will undoubtedly play a pivotal role in advancing innovations in energy transmission and electronic devices.

在物理学和电气工程的领域中，理解“导电电流”的概念对于理解电流如何在不同材料中流动至关重要。术语“导电电流”指的是由于施加的电场而通过导体流动的电荷载体，通常是电子。这种现象发生在具有自由电子的材料中，例如金属，这使得电能的高效传输成为可能。当我们谈论“导电电流”时，认识到它与欧姆定律的关系非常重要，该定律指出，在两个点之间流动的电流（I）与这两个点之间的电压（V）成正比，与导体的电阻（R）成反比。数学上可以表示为I = V/R。这个方程强调了对于给定电压，流过的“导电电流”的数量取决于材料的电阻。不同的材料表现出不同程度的导电性，这影响了“导电电流”。例如，铜以其高导电性而闻名，因此成为电线的热门选择。另一方面，橡胶是一种绝缘体，不易让“导电电流”通过。这种区别在设计电路和理解不同组件在电气系统中的相互作用时至关重要。“导电电流”的过程也会受到温度的影响。当导体的温度升高时，材料内部的原子振动更加剧烈。这种增加的原子运动可能会阻碍电子的流动，从而影响整体的“导电电流”。在许多导电材料中，这导致电阻呈正温度系数，即温度升高时，电阻增加，从而导致电流流动减少。此外，在半导体材料中，可以通过掺杂来操控“导电电流”，掺杂是指向材料中添加杂质以增强其导电性。通过引入特定元素，工程师可以创建p型或n型半导体，这对现代电子设备如晶体管和二极管至关重要。这些设备依赖于“导电电流”的受控流动才能正常工作，从而允许复杂电路和技术的发展。总之，“导电电流”的概念在电力和电子学的研究中是基础性的。它描述了电荷在导电材料中的流动，并受到欧姆定律、温度和材料特性的影响。理解“导电电流”对任何参与电气工程、物理学或相关领域的人来说至关重要，因为它为有效设计和分析电气系统奠定了基础。随着技术的不断发展，我们对“导电电流”的掌握无疑将在推动能源传输和电子设备创新方面发挥关键作用。