2-6 How does a rotating coil electric generator work? 5 pis O A. Alternating current is run through a coil to create a changing magnetic field, and the changing magnetic field induces a current into a different coil. OB. The coil is made of ferromagnetic material that interacts with the magnetic field produced by an external magnet. OC. Eddy currents in the coil interact with the magnetic field and generate an emf. OD. Mechanical energy is expended to spin the coil around in an existing magnetic field produced by an external magnet, causing a changing magnetic flux which induces an alternating electrical current in the coil