So I was just reading on generators. The basics that I've understood is that it works by inducing a current through motion of a coil on a magnetic field. So what I didn't understand was that it produces an alternate current through full 360` rotation. In a half cycle, it induces a current in one direction and in the other half cycle it induces the current in the opposite direction. What I don't understand is that if it is rotating ONLY clockwise or anticlockwise, then why is it producing an alternating current? I thought that would happen if it rotated a half-cycle clockwise and then it rotated back to its original position by rotating a half cycle anticlockwise. Also on a side note, doesn't the wire get twisted up if the coil keeps rotating in one direction constantly? Edit: The title says transformers while I meant generators.