ohmic resistance

简明释义

欧姆电阻

英英释义

例句

1.In this circuit, the ohmic resistance 欧姆电阻 of the resistor can be calculated using Ohm's law.

在这个电路中，电阻的欧姆电阻可以使用欧姆定律进行计算。

2.The wire has a low ohmic resistance 欧姆电阻, which allows for efficient current flow.

这根电线具有低欧姆电阻，这使得电流流动更有效。

3.When measuring the ohmic resistance 欧姆电阻 with a multimeter, ensure the circuit is powered off.

使用万用表测量欧姆电阻时，请确保电路断电。

4.The ohmic resistance 欧姆电阻 of a material affects its ability to conduct electricity.

材料的欧姆电阻影响其导电能力。

5.To reduce the ohmic resistance 欧姆电阻, you can use thicker wires in your electrical setup.

为了降低欧姆电阻，您可以在电气设置中使用更粗的电线。

作文

Understanding the concept of ohmic resistance is crucial for anyone studying electrical engineering or physics. Ohmic resistance refers to the opposition that a material presents to the flow of electric current. This phenomenon is described by Ohm's Law, which states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance. The formula can be expressed as V = IR, where V is the voltage, I is the current, and R is the resistance. In this context, ohmic resistance is characterized by a constant value, meaning that the resistance remains unchanged regardless of the voltage or current levels applied to it.One of the key characteristics of ohmic resistance is that it applies to materials that follow Ohm's Law. These materials are known as ohmic materials, and they typically include metals like copper and aluminum. When a voltage is applied to an ohmic material, the relationship between voltage and current is linear, which means that if you double the voltage, the current will also double, maintaining a consistent resistance.In contrast, non-ohmic materials do not have a constant resistance. For example, diodes and transistors exhibit non-ohmic behavior because their resistance changes with varying voltage and current. Understanding the difference between ohmic and non-ohmic materials is essential for designing electronic circuits and systems. Engineers must consider ohmic resistance when selecting materials for specific applications to ensure efficient performance.The practical implications of ohmic resistance extend beyond theoretical concepts. In real-world applications, such as electrical wiring in homes and appliances, understanding ohmic resistance helps in calculating power losses due to heat generated by the resistance in wires. This is particularly important for ensuring safety and efficiency in electrical systems. For instance, using wires with lower ohmic resistance can reduce energy losses and improve the overall efficiency of power distribution.Moreover, ohmic resistance plays a significant role in the development of various electronic devices. For example, resistors are fundamental components in circuits that utilize ohmic resistance to control current flow. By selecting appropriate resistor values, engineers can design circuits that function correctly while managing the ohmic resistance to prevent overheating and potential damage.In summary, ohmic resistance is a vital concept in the field of electricity and electronics. It describes the consistent opposition to electric current in ohmic materials, governed by Ohm's Law. Understanding this principle allows engineers and scientists to design more efficient electrical systems and devices while minimizing energy losses. As technology continues to advance, the importance of ohmic resistance will remain a fundamental aspect of electrical engineering, influencing everything from circuit design to energy efficiency in modern applications.

理解欧姆电阻的概念对任何学习电气工程或物理的人来说都是至关重要的。欧姆电阻是指材料对电流流动的阻碍。这一现象由欧姆定律描述，欧姆定律指出，在两个点之间导体中流动的电流与这两个点之间的电压成正比，与电阻成反比。公式可以表示为V = IR，其中V是电压，I是电流，R是电阻。在这个背景下，欧姆电阻的特征是具有恒定值，这意味着无论施加的电压或电流水平如何，电阻保持不变。欧姆电阻的一个关键特性是它适用于遵循欧姆定律的材料。这些材料被称为欧姆材料，通常包括铜和铝等金属。当对欧姆材料施加电压时，电压和电流之间的关系是线性的，这意味着如果你将电压加倍，电流也会加倍，从而保持一致的电阻。相比之下，非欧姆材料的电阻并不恒定。例如，二极管和晶体管表现出非欧姆行为，因为它们的电阻随着电压和电流的变化而变化。了解欧姆材料和非欧姆材料之间的区别对于设计电子电路和系统至关重要。工程师在选择特定应用材料时必须考虑欧姆电阻，以确保高效的性能。欧姆电阻的实际影响超出了理论概念。在现实应用中，例如家庭和电器中的电线，理解欧姆电阻有助于计算由于电线中的电阻产生的热量造成的功率损失。这对于确保电气系统的安全性和效率特别重要。例如，使用电阻较低的电线可以减少能量损失，提高电力分配的整体效率。此外，欧姆电阻在各种电子设备的发展中也发挥着重要作用。例如，电阻器是利用欧姆电阻控制电流流动的电路中的基本组件。通过选择合适的电阻值，工程师可以设计出能够正常工作的电路，同时管理欧姆电阻以防止过热和潜在损坏。总之，欧姆电阻是电力和电子学领域的重要概念。它描述了在欧姆材料中对电流的一致阻碍，这一现象受欧姆定律支配。理解这一原理使工程师和科学家能够设计更高效的电气系统和设备，同时最小化能量损失。随着技术的不断进步，欧姆电阻的重要性将继续作为电气工程的基本方面，影响从电路设计到现代应用中的能源效率的方方面面。