What
is Direct Current?
Direct current, often
abbreviated as DC, is a type of electric current that flows in a constant
direction. In other words, the flow of electric charge is unidirectional,
moving from the positive terminal to the negative terminal of a power source,
such as a battery or a DC power supply.
DC is different from
alternating current (AC), where the electric charge periodically reverses
direction. The voltage of a DC source remains relatively constant over time,
creating a steady and continuous flow of electric charge.
Direct current is commonly
used in various electronic devices, such as batteries, electronic circuits, and
many low-voltage applications. It has specific advantages in certain
applications, but for long-distance power transmission and other purposes,
alternating current is often preferred due to its ability to be easily
transformed and transmitted at different voltage levels.
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