DC (Direct Current) is the flow of electric charge that only moves in one direction. It has a constant magnitude and does not change with time.
Imagine DC current as water flowing steadily down a river without any interruptions or changes in direction. The water always flows at the same speed and never reverses its course.
AC Current: AC (Alternating Current) is the flow of electric charge that periodically changes direction. It oscillates back and forth, like waves on the ocean.
Voltage: Voltage is the electrical potential difference between two points, which causes charges to move within a circuit.
Resistance: Resistance is an electrical property that opposes the flow of current. It determines how much current will flow for a given voltage.
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