电压门控离子通道和配体门控离子通道之间的关键区别在于电压门控离子通道会因电压差而打开，而配体门控通道则会因配体结合而打开。 膜转运是离子进入和释放细胞的重要机制。因此，离子通道是帮助膜转运的重要分子...
电压变换器(voltage converter)和变压器(transformer)的区别 在实践中，电压由许多不同的来源提供，通常由市电提供。这些电压源，无论是交流还是直流，都有一个特定的或标准的电压值（例如，交流电源为230V，汽车电池为12V DC）...
... v=i x r Conductors have the same resistance irrespective of whether the current is c***tant or varying. For alternating current, resistance can be calculated using Ohm’s Law with instantaneous voltage and current. The resistance measured in Ohms (Ω) depends on the conductor’s resistivity (ρ),...
现在的(current)和电压(voltage)的区别 在电场中，电荷受作用于它们的力的影响；因此，必须对带电粒子做功，才能从电场中的一点移动到另一点。这个功被定义为这两点之间的电位差。电位差也称为两点间的电压。电荷在电位...
EMF（电动势）是没有电流时电源两端的电压。当电路闭合，电流流过时，在电源的两端有一个小于电动势的电压。这是由于电源本身的内阻导致的电压降。 什么是电动势(emf)？ 带电体可以通过消耗其他类型的能量，例如机械...
... the more positive potential. Here, the potential barrier to the diffusion current and the space charge width are increased. Since the potential barrier is now large, the diffusion current drops. The drift current does not change significantly. The overall result is a **all net current flowing from ...
...普通二极管损坏。 以下是二极管的典型电流电压特性： Current – Voltage Characteristic of a Diode 什么是齐纳二极管(a zener diode)？ Zener diodes are a special type of diode, designed to carry reverse currents as well. Zener diodes achieve this by being comparativel...
...ircuit is the potential difference ( ) across the component divided by the current ( ) through the component: 如果在由交流电供电的电路上加一个电阻器，电流的变化将与电压的变化同时发生。 Current and voltage across a resistor in an AC circuit changes at the same ph...
...流电流中，电子周期性地来回振荡。 什么是直流电流(dc current)？ 在直流电中，电子只朝一个方向流动。直流电流可以通过导体连接两个不同电位的点而形成。然后，只要电位保持不变，电子就会从较负的电位流向较负的电位。...
...耗散的功率周期性地变化。 什么是直流电源(dc power)？ DC current refers to a current formed by electr*** flowing continuously in one direction. As the electr*** flow through various components in the circuit, they lose their electrical energy. DC power refers to the amount of ener...
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