Current is a crucial concept in electronics as it refers to the flow of electrons between two points with varying voltage. It is typically measured in ampere (A) and can be categorized into two types: alternating current (AC) and direct current (DC).
Direct current (DC) is characterized by the flow of electrons in one direction and is commonly produced by batteries. On the other hand, alternating current (AC) undergoes periodic changes in direction and is the type of current supplied by the electrical grid, enabling us to power our homes through wall sockets.
These two types of current possess distinct characteristics, making them suitable for different applications. For instance, DC is unsuitable for long-distance transmission, which is why AC is employed for this purpose. However, most electronic devices operate on DC, necessitating the use of a device known as a rectifier to convert AC to DC. Conversely, we can also convert DC to AC using devices called power inverters, often found in applications such as recreational vehicles.
By understanding the concept of current and its types, we can better comprehend the functioning of electronic devices and their power requirements.