ohm's law

简明释义

欧姆定律

英英释义

例句

1.The relationship between voltage, current, and resistance is defined by ohm's law (欧姆定律).

电压、电流和电阻之间的关系由ohm's law（欧姆定律）定义。

2.A simple experiment can demonstrate ohm's law (欧姆定律) using a resistor and a voltage source.

一个简单的实验可以使用电阻器和电压源来演示ohm's law（欧姆定律）。

3.To find the current flowing through a circuit, you can use ohm's law (欧姆定律) by dividing voltage by resistance.

要找出电路中流动的电流，可以通过用电压除以电阻来使用ohm's law（欧姆定律）。

4.In electrical engineering, we often apply ohm's law (欧姆定律) to calculate the resistance in a circuit.

在电气工程中，我们经常应用ohm's law（欧姆定律）来计算电路中的电阻。

5.When designing circuits, understanding ohm's law (欧姆定律) is crucial for ensuring safety and efficiency.

在设计电路时，理解ohm's law（欧姆定律）对确保安全和效率至关重要。

作文

Understanding electricity is fundamental in the field of physics and engineering. One of the most important principles that govern electrical circuits is Ohm's Law. This law, formulated by the German physicist Georg Simon Ohm in the 1820s, provides a simple mathematical relationship between voltage, current, and resistance in an electrical circuit. The formula 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. This can be expressed as: Ohm's Law: V = I × R.The significance of Ohm's Law cannot be overstated. It serves as the foundation for understanding how electrical circuits operate. When designing electronic devices, engineers rely heavily on this law to ensure that circuits function correctly. For example, if an engineer needs to design a circuit that requires a specific amount of current, they can use Ohm's Law to calculate the necessary voltage and resistance values. This ensures that the circuit operates within safe limits, preventing overheating and potential failures.In practical applications, Ohm's Law is used in various fields, from household wiring to complex industrial systems. Electricians use it to troubleshoot problems in electrical systems. If a light bulb is not working, they might measure the voltage and current to determine if the problem lies in the bulb itself or elsewhere in the circuit. By applying Ohm's Law, they can diagnose issues more effectively, saving time and resources.Moreover, Ohm's Law is also crucial in learning about different components of electrical circuits, such as resistors, capacitors, and inductors. Each of these components has unique properties that affect how they interact with voltage and current. For instance, resistors are designed to limit the flow of current, and understanding their behavior in relation to Ohm's Law is key to circuit design.Additionally, Ohm's Law can be applied in more advanced concepts, such as alternating current (AC) circuits and the impedance of components. While Ohm's Law primarily deals with direct current (DC) circuits, its principles can be extended to AC circuits with modifications to account for the phase difference between voltage and current. This extension is crucial for engineers working with audio equipment, radio transmissions, and other technologies that rely on AC.In conclusion, Ohm's Law is a fundamental principle that underpins much of modern electrical engineering and physics. Its ability to relate voltage, current, and resistance allows for the design, analysis, and troubleshooting of electrical circuits. Whether one is a student learning the basics of electricity or an experienced engineer working on complex systems, a solid understanding of Ohm's Law is essential. As technology continues to evolve, the principles outlined by Ohm's Law will remain relevant, guiding advancements in electronics and electrical engineering for years to come.

欧姆定律是理解电学的基础。在物理学和工程学领域，电流的基本原理之一就是欧姆定律。这个定律由德国物理学家乔治·西蒙·欧姆在1820年代提出，提供了电路中电压、电流和电阻之间简单的数学关系。公式表明，流经导体的电流（I）与两点之间的电压（V）成正比，与导体的电阻（R）成反比。可以表示为：欧姆定律：V = I × R。欧姆定律的重要性不容小觑。它作为理解电路操作的基础。当设计电子设备时，工程师非常依赖这一法律，以确保电路正常运作。例如，如果工程师需要设计一个需要特定电流的电路，他们可以使用欧姆定律来计算所需的电压和电阻值。这确保电路在安全范围内运行，防止过热和潜在故障。在实际应用中，欧姆定律被广泛用于从家庭布线到复杂工业系统的各个领域。电工们利用它来排除电气系统中的故障。如果灯泡不亮，他们可能会测量电压和电流，以确定问题出在灯泡本身还是电路的其他地方。通过应用欧姆定律，他们可以更有效地诊断问题，节省时间和资源。此外，欧姆定律在学习电路的不同组件（如电阻器、电容器和电感器）时也至关重要。每个组件都有独特的性质，影响它们与电压和电流的相互作用。例如，电阻器旨在限制电流的流动，理解它们相对于欧姆定律的行为是电路设计的关键。另外，欧姆定律还可以应用于更高级的概念，如交流（AC）电路和元件的阻抗。尽管欧姆定律主要处理直流（DC）电路，但其原则可以扩展到交流电路，并进行修改以考虑电压与电流之间的相位差。这一扩展对从事音频设备、无线电传输和其他依赖交流的技术的工程师至关重要。总之，欧姆定律是现代电气工程和物理学的基础原则。它能够将电压、电流和电阻联系起来，允许对电路进行设计、分析和故障排除。无论是学习电力基础知识的学生，还是在复杂系统上工作的经验丰富的工程师，扎实理解欧姆定律都是必不可少的。随着技术的不断发展，欧姆定律所阐述的原则将继续保持相关性，指导未来电子和电气工程的进步。