Огляд електричного потенціалу (напруги)

What is Electric Voltage?

In an electrochemical cell there are two electrodes: anode and cathode. Electrons move from the anode, which is negatively charged, to the positively charged cathode. The force behind the movement of electrons between these electrodes is known as cell voltage. Cell voltage is also known as cell potential ($E$) and electromotive force (emf).

The electrical voltage or potential is measured in volts ($V$). The volt is related to energy values, joules ($J$), and electric charge, coulomb ($C$). The relationship between these is described with the equation: $$1J = 1C \times 1V$$

(Video) Voltage Explained - What is Voltage? Basic electricity potential difference

by The Engineering Mindset

In this video, The Engineering Mindset explains voltage. They take a more engineering or physics-based approach. But, this is a really clear explanation of voltage and its applications. They start by defining voltage. Then, they explain how batteries work and why we use volts as a unit. Finally, they explain why different countries run on different voltages. Overall, this is a very informative video!