electric force

简明释义

电动力

英英释义

例句

1.The electric force 电力 between two charged objects can be calculated using Coulomb's law.

两个带电物体之间的电力可以通过库仑定律计算。

2.The strength of the electric force 电力 decreases with the square of the distance between two charges.

两个电荷之间的距离平方越大，电力的强度就越小。

3.When two balloons are rubbed together, they acquire charges that create an electric force 电力 between them.

当两个气球相互摩擦时，它们会获得电荷，从而在它们之间产生电力。

4.The electric force 电力 is responsible for holding electrons in orbit around the nucleus.

电力负责将电子保持在原子核周围的轨道上。

5.In a circuit, the electric force 电力 drives the flow of current.

在电路中，电力推动电流的流动。

作文

Electricity is a fundamental aspect of our daily lives, influencing everything from the devices we use to the way we communicate. One of the core concepts in understanding electricity is the concept of electric force, which refers to the interaction between charged particles. This force can either be attractive or repulsive, depending on the types of charges involved. For instance, like charges repel each other while opposite charges attract. This principle is crucial in explaining various phenomena in both nature and technology.The electric force is governed by Coulomb's Law, which quantifies the amount of force between two charges. According to this law, the magnitude of the electric force is directly proportional to the product of the magnitudes of the charges and inversely proportional to the square of the distance between them. Mathematically, it can be expressed as F = k * (|q1 * q2|) / r², where F is the force, k is Coulomb's constant, q1 and q2 are the amounts of charge, and r is the distance between the charges. This relationship helps us understand how far apart charged objects need to be for the electric force to diminish significantly.In practical terms, the electric force is responsible for many everyday occurrences. For example, when you rub a balloon on your hair, you are transferring electrons from your hair to the balloon, creating an imbalance of charges. The balloon becomes negatively charged, while your hair becomes positively charged. When you bring the balloon close to your hair again, the electric force causes your hair to stand on end, as the positive charges are attracted to the negative charges on the balloon. This simple experiment illustrates how the electric force operates in real life, making abstract concepts tangible and relatable.Moreover, the electric force plays a critical role in the functioning of electronic devices. In circuits, the flow of electric current is driven by the forces exerted on electrons by electric fields. Understanding the electric force allows engineers to design more efficient circuits and improve the performance of devices such as computers and smartphones. Additionally, the principles of electric force are utilized in various technologies, including capacitors, motors, and even in medical devices like defibrillators.Another fascinating application of the electric force can be found in the natural world. Lightning, for instance, is a dramatic demonstration of the power of electric force. During a thunderstorm, the buildup of electric charges in clouds creates a significant potential difference between the clouds and the ground. Once this difference becomes large enough, the electric force overcomes the resistance of the air, resulting in a lightning strike. This natural phenomenon highlights not only the strength of the electric force but also its ability to shape our environment.In conclusion, the concept of electric force is vital for understanding the interactions between charged particles and the implications of these interactions in both nature and technology. From the simple act of rubbing a balloon to the complex workings of electronic devices and natural phenomena like lightning, the electric force is an ever-present force that shapes our world. By grasping this concept, we gain insight into the fundamental principles of electricity, enhancing our appreciation for the science that underlies our modern existence.

电力是我们日常生活中的一个基本方面，影响着我们使用的设备以及我们沟通的方式。理解电力的核心概念之一是电力的概念，它指的是带电粒子之间的相互作用。这种力可以是吸引力或排斥力，取决于涉及的电荷类型。例如，同种电荷相互排斥，而异种电荷则相互吸引。这一原理对于解释自然和技术中的各种现象至关重要。电力受库仑定律的支配，该定律量化了两个电荷之间的力的大小。根据该定律，电力的大小与电荷的大小的乘积成正比，与它们之间的距离的平方成反比。数学上可以表示为F = k * (|q1 * q2|) / r²，其中F是力，k是库仑常数，q1和q2是电荷量，r是电荷之间的距离。这个关系帮助我们理解带电物体需要多远才能使电力显著减小。在实际中，电力负责许多日常发生的事情。例如，当你用气球摩擦头发时，你是在将电子从头发转移到气球，从而造成电荷的不平衡。气球变得带负电，而你的头发变得带正电。当你再次将气球靠近头发时，电力使你的头发竖起，因为正电荷被气球上的负电荷吸引。这个简单的实验说明了电力在现实生活中的运作，使抽象的概念变得具体和可关联。此外，电力在电子设备的功能中发挥着关键作用。在电路中，电流的流动是由电场对电子施加的力驱动的。理解电力使工程师能够设计更高效的电路，提高计算机和智能手机等设备的性能。此外，电力的原理被应用于各种技术中，包括电容器、电动机，甚至医疗设备如除颤器。电力的另一个迷人应用可以在自然界中找到。例如，闪电就是电力力量的一种戏剧性表现。在雷暴期间，云层中电荷的积累会产生云层与地面之间的显著电位差。一旦这种差异变得足够大，电力就会克服空气的阻力，导致闪电的发生。这一自然现象不仅突显了电力的强度，也展示了它塑造我们环境的能力。总之，电力的概念对于理解带电粒子之间的相互作用及其在自然和技术中的影响至关重要。从简单的摩擦气球到电子设备的复杂工作以及闪电等自然现象，电力是一个无处不在的力量，塑造着我们的世界。通过掌握这一概念，我们能够深入了解电力的基本原理，增强对支撑我们现代生活的科学的欣赏。