Tasasähköä
Tasasähköä, also known as direct current (DC), is an electric current that flows in only one direction. This is in contrast to alternating current (AC), where the direction of the current periodically reverses. In a DC circuit, electrons flow from the negative terminal to the positive terminal of a power source.
Historically, DC was the first form of electricity to be widely used. Early electrical systems, such as
Despite the prevalence of AC, DC power remains crucial for many applications. Batteries, for instance, store