Spec 1PH0
Revise Edexcel GCSE Physics 13.2.3 The National Grid with the question bank, revision guides, and flashcards.
Explain why, in the national grid, electrical energy is transferred at high voltages from power stations, and then transferred at lower voltages in each locality for domestic uses as it improves the efficiency by reducing heat loss in transmission lines. • Explain where and why step-up and step-down transformers are used in the transmission of electricity in the national grid.
