Physics for IGCSE & O level - Magnets And Currents (Section 4 - No. 8)
In an AC generator, what causes the current to reverse direction?
The rotation of the coil.
The strength of the magnetic field.
The use of slip rings.
The use of brushes.
คำอธิบาย
The continuous rotation of the coil in an AC generator causes the current's direction to reverse.