I just replaced my first set of brakes, and changed pads for the first time. I haven't driven the car or anything, but I made an observation: After I apply the brakes, with the pedal completely released, the pads appear to be dragging against the rotor. It's not a serious amount of drag; I'm able to rotate the wheel pretty easily by hand, but it's noticeable compared to not having pads installed at all.
Is this normal? Should there be any drag present?