True or False: All the flux produced by the primary winding cuts every turn of the secondary winding in a single-phase transformer.

The statement is true because, in a single-phase transformer, the primary winding generates a magnetic flux that is directed through the core of the transformer. This core is designed to efficiently channel the magnetic field lines produced by the current flowing through the primary winding. As a result, every turn of the secondary winding is exposed to this magnetic flux.

This principle underlies the operation of transformers, particularly in the context of electromagnetic induction, where a changing magnetic field induces an electromotive force (EMF) in the secondary winding. The design and structure of the transformer ensure that all the turns of the secondary winding effectively link with the magnetic flux produced by the primary, which is crucial for efficient energy transfer from the primary to the secondary circuit.

In contrast, other options imply conditions that would limit the coupling of the magnetic flux between the primary and secondary windings, which is contrary to the fundamental operation of single-phase transformers. The ideal scenario assumes that the transformer is operating under conditions where the core is adequately magnetized, and there are no significant losses or leakage paths for the magnetic flux.