electric potential

简明释义

电位；电势

英英释义

例句

1.The electric potential 电势 at the surface of a charged conductor is constant.

带电导体表面的电势是恒定的。

2.In a circuit, the difference in electric potential 电势 between two points drives the current.

在电路中，两个点之间的电势差异驱动电流流动。

3.The electric potential 电势 inside a capacitor can be measured using a voltmeter.

可以使用电压表测量电容器内部的电势。

4.To calculate the work done, you need to know the electric potential 电势 at the starting and ending points.

要计算所做的功，你需要知道起点和终点的电势。

5.When a charge moves in an electric field, its electric potential 电势 changes.

当一个电荷在电场中移动时，它的电势会发生变化。

作文

Electricity plays a crucial role in our daily lives, powering everything from our homes to our devices. One of the fundamental concepts in understanding electricity is electric potential, which refers to the amount of electric potential energy per unit charge at a specific point in an electric field. In simpler terms, it can be thought of as the 'pressure' that pushes electric charges through a circuit. The higher the electric potential, the greater the ability to do work by moving charges. To illustrate this concept, consider a water analogy. Imagine a water tank at a certain height. The water has gravitational potential energy due to its position. If we open a valve at the bottom of the tank, the water will flow down due to gravity. Similarly, when there is a difference in electric potential between two points in a circuit, electrons will flow from the point of higher potential to the point of lower potential, creating an electric current. The unit of electric potential is the volt (V), named after the Italian scientist Alessandro Volta. One volt is defined as the potential difference that would move one coulomb of charge with one joule of energy. This relationship emphasizes the connection between electric potential and energy, highlighting how a higher electric potential can lead to more energy being available for performing work.In practical applications, understanding electric potential is essential for designing electrical circuits and systems. Engineers must calculate the electric potential at various points in a circuit to ensure that devices receive the appropriate voltage for operation. For example, in power distribution networks, transformers are used to step up or step down electric potential to ensure that electricity is transmitted efficiently over long distances.Moreover, the concept of electric potential is not limited to circuits. It also plays a significant role in electrostatics, where charged objects create electric fields around them. The electric potential at a point in space due to a charged object can be calculated using the formula V = kQ/r, where V is the electric potential, k is Coulomb's constant, Q is the charge, and r is the distance from the charge. This equation helps us understand how electric potential varies with distance and charge, which is crucial for applications such as capacitors and sensors.In conclusion, electric potential is a foundational concept in the study of electricity and electromagnetism. It helps explain how electric charges move, how energy is transferred in circuits, and how electric fields interact with matter. By grasping the principles behind electric potential, we can better understand the technology that powers our modern world and innovate new solutions for the future. As we continue to explore the vast landscape of electricity, the significance of electric potential remains ever relevant, guiding engineers, scientists, and students alike in their quest for knowledge and advancement in the field of electrical engineering.

电力在我们日常生活中发挥着至关重要的作用，为我们的家居和设备提供动力。理解电力的基本概念之一是电势，它指的是在电场中特定点每单位电荷的电势能量。在简单的术语中，可以将其视为推动电荷通过电路的“压力”。电势越高，移动电荷所做的功的能力就越大。为了说明这一概念，可以考虑水的类比。想象一个在某个高度的水箱。由于其位置，水具有重力势能。如果我们打开水箱底部的阀门，水将因重力而流出。类似地，当电路中两个点之间存在电势差时，电子将从高电势点流向低电势点，从而产生电流。电势的单位是伏特（V），以意大利科学家亚历山德罗·伏打的名字命名。一个伏特被定义为使一库仑电荷移动一焦耳能量的电势差。这种关系强调了电势与能量之间的联系，突显了更高的电势如何能够提供更多的能量来完成工作。在实际应用中，理解电势对于设计电路和系统至关重要。工程师必须计算电路中各个点的电势，以确保设备获得适当的操作电压。例如，在电力分配网络中，变压器用于升高或降低电势，以确保电力在长距离传输时的效率。此外，电势的概念不仅限于电路。它在静电学中也发挥着重要作用，带电物体在其周围产生电场。由于带电物体而在空间中某一点的电势可以使用公式V = kQ/r计算，其中V是电势，k是库仑常数，Q是电荷，r是离电荷的距离。这个方程帮助我们理解电势如何随距离和电荷变化，这对于电容器和传感器等应用至关重要。总之，电势是电力和电磁学研究中的基础概念。它有助于解释电荷如何移动，能量如何在电路中转移，以及电场如何与物质相互作用。通过掌握电势背后的原理，我们可以更好地理解为我们现代世界提供动力的技术，并为未来创新新解决方案。当我们继续探索电力的广阔领域时，电势的重要性依然显而易见，指导着工程师、科学家和学生们在电气工程领域追求知识和进步的旅程。