Which statement correctly describes the process that occurs inside an operating transformer?
A constant direct current in the primary coil establishes a continuously changing magnetic flux in the core.
The iron core electrically conducts alternating current from the primary coil to the secondary coil.
An alternating current in the primary coil creates a changing magnetic field, which induces an alternating voltage across the secondary coil.
An alternating voltage across the primary coil induces a constant, steady magnetic field in the iron core.
136 exam-style questions on CIE IGCSE Physics 4.5.6a Construction and operation of a transformer. Each one has a worked solution and a mark scheme showing where the marks go.