Question
OCR Paper P2 (Higher)
Electricity is transmitted across the National Grid at very high voltages (e.g. 400 kV).
Explain why high voltage is used and how step-up/step-down transformers fit into this system. (4 marks)
4 marks · take your time before peeking.
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Generated by TopMyGrade AI · cross-check official sources before relying on the mark-scheme phrasing.