Why is the iron core of a practical transformer constructed from thin, laminated sheets of soft iron instead of a single solid block?
To prevent electrical conduction between the primary coil and the secondary coil.
To reduce energy loss caused by induced eddy currents in the core.
To prevent the core from becoming permanently magnetized.
To increase the maximum magnetic field strength that can be produced in the 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.