The basic working principle of the motor is: the charged conductor is stressed in the magnetic field; According to this experiment, people made motors; Convert electrical energy into mechanical energy;

If the power supply voltage is increased, according to ohm's law, the current in the coil increases, the force on the coil becomes greater and the rotation speed of the coil becomes faster;

Scrape off half of the enameled wire on the same side as the rotating shaft with a blade to play the role of commutator;

To sum up, ① ③ ⑤ is correct, ② ④ is wrong;

So choose D.