Electricity arrives at a regional substation at 132 kV132\ \text{kV}132 kV and is supplied from there to an industrial estate at 33 kV33\ \text{kV}33 kV.
Which statement describes the transformer used for this change?
A step-down transformer with more turns on its secondary coil than on its primary coil.
A step-up transformer with more turns on its secondary coil than on its primary coil.
A step-up transformer with fewer turns on its secondary coil than on its primary coil.
A step-down transformer with fewer turns on its secondary coil than on its primary coil.
108 exam-style questions on Edexcel GCSE Physics 13.2 Transformers and the National Grid, covering 13.2.1 Transformers and induction, 13.2.2 The transformer turns-ratio equation, 13.2.3 The National Grid, 13.2.4 The transformer power equation, and 13.2.5 Advantages of high-voltage transmission. Each one has a worked solution and a mark scheme showing where the marks go.