A transformer is to be used to provide a 12 V AC output from a 240 V AC supply.
What are suitable numbers of turns for the primary coil and for the secondary coil?
Primary coil: 100100100; secondary coil: 200020002000
Primary coil: 120012001200; secondary coil: 606060
Primary coil: 480480480; secondary coil: 240240240
Primary coil: 240240240; secondary coil: 120012001200
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.