What is DC Current?
What is DC Current?
Direct Current Definition
Direct current is a constant and unidirectional flow of electric charge, moving from a negative to a positive terminal.
AC vs DC
Direct current flows in one direction and is used in applications requiring stable voltage, while alternating current can reverse direction and is typically used where varying power levels are needed.
DC Current Symbol
The symbol for DC current is a straight line, indicative of its consistent and unchanging direction.
Measurement Techniques
DC current is measured using a multimeter or a clamp-on meter, which assesses the flow of electricity through a circuit.
Direct current applications
DC supply is used in many low voltage applications like charging mobile batteries.
In a vehicle, the battery is used to start the engine, lights, and ignition system.
In communication, a 48V DC supply is used.
In a solar power plant, energy is generated in the form of DC current.
How To Measure DC Current
The DC current can be measured by a multimeter. The multimeter is connected in series with the load.The Black (COM) probe of a multimeter is connected to the negative terminal of the battery. The positive probe (red probe) is connected to the load.
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