An appliance, such as a microwave oven, is connected to a 230 V230\text{ V}230 V a.c. mains electricity supply.
The microwave oven has an on-off switch in one of the wires connecting it to the mains supply. State and explain which wire includes the switch.
Internally, the microwave oven uses a transformer to change the 230 V230\text{ V}230 V a.c. voltage to a 2300 V2300\text{ V}2300 V a.c. voltage.
State the name of this type of transformer.
Describe the construction of this transformer.
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.