They say that negative power from an inductive circuit means that power is flowing from the inductor back to the source, so no work is done. For a motor, even though the power or current is flowing back to the source, because it is a closed circuit, the current also flows through the coil of the motor, generating the magnetic field it needs to operate, so in the end, isn't negative power also generating useful work?

Please help me, I really want to understand reactive power better.