Dc
In short
Direct Current is the steady flow of electric charge in a single direction.
In plain words
Unlike alternating current which switches directions, DC flows like a one-way street. It provides a constant voltage level that does not pulse or wave.
A simple example
A standard AA battery provides direct current to power a small torch. The electricity flows from the negative end to the positive end without changing course.
Why it matters
Most modern electronics, such as smartphones and laptops, require DC to function correctly. It is also the primary way energy is stored in batteries.
Easy to mix up
It is often confused with Alternating Current (AC), which is the type of electricity found in wall sockets.