An AC mains adapter contains a transformer.
The primary coil of the transformer has 800 turns and the secondary coil has 64 turns. The input voltage to the transformer is 240 V.
Calculate the output voltage.
Output voltage=...................................................... V \text{Output voltage} = \text{...................................................... V} Output voltage=...................................................... VState the name of the metal used to make the core of the transformer.
Explain why a transformer requires alternating current (a.c.) rather than direct current (d.c.) to operate.
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.