This may sound silly to most, however, it answers a million questions for me, so please have mercy on the down voting, thanks.
A simple example without specifics, when a battery and a DC motor are connected via +/-, the motor spins.
Theoretically, in my mind atleast, an AC-DC adapter(again without specifics) with the wire cut at the output end will have a positive and negative wire. If these were to be correctly connected to the same DC motor as before, the motor should also spin. Is this correct or am I missing a screw?