First, the basic properties of voltage: voltage is a measure of potential difference, indicating the energy difference when electrons move from one point to another in an electric field. Generally, the higher the voltage, the more energy it carries. In the circuit, voltage is usually used to drive the flow of current, so as to realize the transmission and conversion of electric energy.
Second, the unit of measurement of voltage: the unit of measurement of voltage is volt (abbreviated as V), which is the unit of potential difference in the international system of units. 1 volt is equal to the potential difference generated by 1 coulomb charge on 1 ohmic resistance. In practical applications, we usually hear different voltage values, such as 1 10V, 220V, etc. , representing the standard voltage in different regions or countries.
Third, the importance of voltage:
Power transmission: Voltage determines the transmission efficiency of electric energy in transmission lines. High voltage transmission can reduce current, thus reducing line loss and improving transmission efficiency.
Equipment operation: Different electrical equipment needs different voltages to operate normally. For example, home appliances such as televisions and refrigerators usually use the standard voltage of 1 10V or 220V.
Safety: Too high or too low voltage may cause equipment damage or personal safety is threatened. Therefore, maintaining a stable voltage is very important for the safe operation of power system.
Four, the application field of voltage:
Household appliances: TV, refrigerator, washing machine and other household appliances need a specific voltage to work normally.
Industrial production: All kinds of production equipment and mechanical equipment in industrial production need stable voltage.
Transportation: The batteries of electric vehicles, trams and other vehicles need a specific voltage to charge.
Communication system: Devices in communication systems such as broadcasting, telephone and computer network need specific voltage to supply power.