В чем отличие ЭДС, Напряжение, Потенциал, Падение Напряжения

What's the difference between the following concepts: EMF (electromotive force), voltage, potential, voltage drop, and potential difference. One of the most important parameters of any power source is voltage. For example, we're used to saying 15 V (one and a half volts), 9 V (volts), 12 V (volts), and so on. However, if we measure voltage at no-load, that is, without a load, the value will typically be slightly higher than the stated value, since we're actually measuring the power source's EMF, which is always slightly higher than the stated value. When connecting a load (resistance), the voltage will decrease due to a partial drop across the power source's internal resistance. The higher the load current, the more noticeable this drop. When adjusting electronic equipment, the concept of potential at a given point is often used. Its value is used to adjust or check the electronics' functionality. To determine the voltage at a specific point in an electrical circuit, the potential difference is measured: one current in the circuit is the point of interest, and the other is the common point. The negative terminal of the power supply or the case is often assumed to be the common point, but this isn't always the case, so care should be taken. Voltage is often used to refer to electromotive force, and vice versa. In most cases, this is perfectly reasonable and doesn't significantly affect accuracy. #EMF #voltage #electronicsclub