Question for the "electrical" Guru's

[petehoovie]

Direct Current Circuit or DC Circuit is a closed electrical circuit in which the flow of electricity is in one direction. DC Circuit has a DC Power Supply which produces Direct Current in the circuit. As opposed to alternating current, Direct Current has a fixed magnitude and flows in one direction only - negative to +positive

[34fordy]

My Fluke 78 meter reads DC current plus or minus depending on where I place the probes. On AC current it reads the same both ways, not plus or minus as it is alternating.