What is direct current (DC)?
Q: What is direct current (DC)?
A: Direct current (DC) is the flow of electricity in a single direction, from the negative to the positive terminals (potential, poles). It always flows in the same direction and is distinguished from alternating current (AC).
Q: What are some sources of DC?
A: Batteries are one of the main sources of direct current (DC), but many other sources also exist such as bridge rectifiers in power supply, solar panels, etc. Typically, the current goes through a conductor and other things that can carry DC. DC is also sent through a vacuum as in electron beams or ion beams.
Q: Who developed commercial electric power transmission using direct current?
A: Thomas Edison developed commercial electric power transmission using direct current in the late nineteenth century.
Q: Why do most electric power distributions use alternating current today?
A: Most electric power distributions use alternating current today because of its advantages with transformers and transmission.
Q: When is high-voltage direct current used?
A: High-voltage direct current is often used for transporting electricity to places far away.
Q: How does AC get converted to DC for applications requiring it?
A: For applications requiring direct current, the alternating current is typically distributed to a substation and then converted to direct
