electric resistance

简明释义

电阻

英英释义

例句

1.When the electric resistance (电阻) increases, the current flowing through the circuit decreases.

当电阻(electric resistance)增加时，流过电路的电流会减少。

2.To improve efficiency, we need to reduce the electric resistance (电阻) in the wiring.

为了提高效率，我们需要减少线路中的电阻(electric resistance)。

3.The formula for calculating voltage is based on the concept of electric resistance (电阻) in a circuit.

计算电压的公式是基于电路中电阻(electric resistance)的概念。

4.The electric resistance (电阻) of a material can change with temperature.

材料的电阻(electric resistance)可能会随着温度变化。

5.In this experiment, we will measure the electric resistance (电阻) of various conductors.

在这个实验中，我们将测量各种导体的电阻(electric resistance)。

作文

Electric resistance is a fundamental concept in the field of physics and electrical engineering. It refers to the opposition that a material offers to the flow of electric current. When an electric current passes through a conductor, such as a wire, it encounters some level of resistance, which can be attributed to various factors including the material's properties, temperature, and length. Understanding electric resistance (电阻) is crucial for designing and analyzing electrical circuits.In practical terms, electric resistance (电阻) is measured in ohms, represented by the symbol 'Ω'. Different materials exhibit different levels of resistance; for instance, metals like copper and aluminum have low resistance, making them excellent conductors of electricity. On the other hand, rubber and glass have high resistance and are considered insulators. This inherent property of materials plays a significant role in determining how efficiently electricity can be transmitted from one point to another.Ohm's Law is a key principle that relates voltage, current, and resistance in an electrical circuit. It 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 is expressed as V = I × R. This relationship helps engineers and scientists calculate the necessary parameters for electrical systems, ensuring they operate safely and effectively.When designing circuits, engineers must consider electric resistance (电阻) to prevent overheating and potential failures. For example, if the resistance in a circuit is too low, excessive current can flow, leading to overheating of components and possible damage. Conversely, if the resistance is too high, it can result in insufficient current, causing devices to underperform or not function at all.Moreover, temperature has a significant effect on electric resistance (电阻). As the temperature of a conductor increases, its resistance typically increases as well. This phenomenon is due to the increased vibration of atoms within the material, which impedes the flow of electrons. In contrast, some materials, known as superconductors, exhibit zero resistance at very low temperatures, allowing for the lossless transmission of electricity. This property holds great potential for advancements in technology, particularly in power generation and storage.In summary, electric resistance (电阻) is a critical factor in the study and application of electrical systems. Its impact on current flow, energy efficiency, and the overall performance of circuits cannot be overstated. By mastering the principles surrounding electric resistance (电阻), engineers and scientists can innovate and improve the way we harness and utilize electrical energy in our everyday lives. Whether it's in household appliances, industrial machinery, or advanced electronic devices, understanding electric resistance (电阻) is essential for creating effective and reliable electrical solutions.

电阻是物理学和电气工程领域的一个基本概念。它指的是材料对电流流动的阻碍。当电流通过导体（如电线）时，它会遇到一定程度的电阻，这可以归因于多种因素，包括材料的性质、温度和长度。理解电阻（electric resistance）对设计和分析电路至关重要。在实际应用中，电阻（electric resistance）的单位是欧姆，用符号'Ω'表示。不同的材料表现出不同的电阻，例如，铜和铝等金属具有低电阻，是优秀的电导体。另一方面，橡胶和玻璃具有高电阻，被认为是绝缘体。这些材料的固有特性在决定电力从一个点传输到另一个点的效率方面起着重要作用。欧姆定律是一个关键原则，它将电压、电流和电阻联系在一起。它表明，流经两个点之间导体的电流（I）与两个点之间的电压（V）成正比，与导体的电阻（R）成反比。数学上，这可以表示为V = I × R。这个关系帮助工程师和科学家计算电气系统所需的参数，确保它们安全有效地运行。在设计电路时，工程师必须考虑电阻（electric resistance），以防止过热和潜在故障。例如，如果电路中的电阻太低，过量的电流可能会流动，导致组件过热和可能的损坏。相反，如果电阻太高，可能导致电流不足，造成设备性能不佳或根本无法工作。此外，温度对电阻（electric resistance）有显著影响。当导体的温度升高时，其电阻通常也会增加。这种现象是由于材料内部原子的振动增加，从而妨碍电子的流动。相反，某些材料被称为超导体，在非常低的温度下表现出零电阻，从而实现无损电力传输。这一特性对技术进步，特别是在发电和储能方面，具有很大潜力。总之，电阻（electric resistance）是电气系统研究和应用中的关键因素。它对电流流动、能量效率以及电路整体性能的影响不可小觑。通过掌握有关电阻（electric resistance）的原理，工程师和科学家可以创新并改善我们在日常生活中利用电能的方式。无论是在家用电器、工业机械还是先进电子设备中，理解电阻（electric resistance）对于创造有效可靠的电气解决方案至关重要。