Physics for IGCSE & O level - Magnets And Currents (Section 1 - No. 42)
Which factor does NOT directly influence the output voltage of an AC generator?
The speed of rotation of the coil.
The strength of the magnetic field.
The number of turns on the coil.
The color of the insulation on the wires.
Explication
The color of the insulation has no direct effect on the output voltage.