magnetic flux

简明释义

磁通量

英英释义

例句

1.Measuring the magnetic flux 磁通量 through a surface helps in understanding the strength of the magnetic field.

测量通过一个表面的磁通量 磁通量有助于理解磁场的强度。

2.The change in magnetic flux 磁通量 through the coil induces an electromotive force.

线圈中的磁通量 磁通量变化会产生电动势。

3.A change in magnetic flux 磁通量 over time can generate a current in a closed loop.

随时间变化的磁通量 磁通量可以在闭合回路中产生电流。

4.In transformers, magnetic flux 磁通量 is essential for energy transfer between the primary and secondary coils.

在变压器中，磁通量 磁通量对于主绕组和副绕组之间的能量传输至关重要。

5.The direction of magnetic flux 磁通量 can be determined using the right-hand rule.

可以使用右手法则来确定磁通量 磁通量的方向。

作文

Understanding the concept of magnetic flux is essential in the field of electromagnetism. Magnetic flux refers to the total magnetic field that passes through a given area. It is a measure of the quantity of magnetism, taking into account the strength and extent of the magnetic field. The unit of magnetic flux is the Weber (Wb), which quantifies how much magnetic field is passing through a surface perpendicular to the field lines. This concept is crucial for various applications, including electric generators, transformers, and magnetic resonance imaging (MRI).

To delve deeper into the topic, one must understand that magnetic flux can be influenced by several factors. The angle at which the magnetic field lines intersect the surface area plays a significant role in determining the amount of magnetic flux passing through. When the magnetic field is perpendicular to the surface, the magnetic flux is maximized. Conversely, if the magnetic field lines are parallel to the surface, the magnetic flux becomes zero.

The mathematical representation of magnetic flux is given by the equation: Φ = B · A · cos(θ), where Φ is the magnetic flux, B is the magnetic field strength, A is the area through which the field lines pass, and θ is the angle between the magnetic field lines and the normal (perpendicular) to the surface. This equation highlights how magnetic flux is not only dependent on the strength of the magnetic field but also on the orientation of the field concerning the area.

In practical scenarios, understanding magnetic flux is vital for designing electrical devices. For instance, in electric generators, the rotation of coils within a magnetic field induces an electromotive force (EMF) due to changing magnetic flux. This principle, known as Faraday's law of electromagnetic induction, states that the induced EMF in a circuit is directly proportional to the rate of change of magnetic flux through the circuit.

Furthermore, magnetic flux is a key concept in the operation of transformers. Transformers rely on the principle of mutual induction, where a changing magnetic flux in one coil induces a voltage in another coil. This allows for the efficient transfer of electrical energy between circuits at different voltage levels.

In summary, magnetic flux is a fundamental concept in electromagnetism that describes the total magnetic field passing through a surface. Its significance extends to various technological applications, making it a critical topic for students and professionals in the field of physics and engineering. By mastering the principles of magnetic flux, one can gain a deeper appreciation for the workings of many modern devices and systems, ultimately contributing to advancements in technology and science.

理解磁通量的概念在电磁学领域至关重要。磁通量指的是通过给定面积的总磁场。它是对磁性数量的测量，考虑了磁场的强度和范围。磁通量的单位是韦伯（Wb），用于量化有多少磁场通过垂直于磁场线的表面。这个概念对于各种应用至关重要，包括发电机、变压器和磁共振成像（MRI）。

要深入探讨这个主题，必须了解磁通量可以受到多个因素的影响。磁场线与表面面积相交的角度在确定通过的磁通量量上起着重要作用。当磁场垂直于表面时，磁通量达到最大值。相反，如果磁场线与表面平行，则磁通量变为零。

磁通量的数学表示由方程式给出：Φ = B · A · cos(θ)，其中Φ是磁通量，B是磁场强度，A是磁场线通过的面积，而θ是磁场线与表面法线（垂直线）之间的角度。这个方程强调了磁通量不仅依赖于磁场的强度，还依赖于磁场相对于面积的方向。

在实际场景中，理解磁通量对于设计电气设备至关重要。例如，在发电机中，线圈在磁场中的旋转会因变化的磁通量而产生电动势（EMF）。这一原理被称为法拉第电磁感应定律，指出电路中感应的电动势与通过电路的磁通量变化率成正比。

此外，磁通量是变压器运行中的一个关键概念。变压器依赖于互感的原理，其中一个线圈中变化的磁通量在另一个线圈中感应出电压。这使得在不同电压水平之间高效地传输电能成为可能。

总之，磁通量是电磁学中的一个基本概念，描述了通过表面的总磁场。它的重要性延伸到各种技术应用，使其成为物理和工程领域学生和专业人士的关键主题。通过掌握磁通量的原理，人们可以更深刻地理解许多现代设备和系统的工作原理，最终促进科技和科学的进步。