4.5.6 — The transformer

Core

• 4.5.6.1 — Describe the construction of a simple transformer with a soft-iron core
• 4.5.6.2 — Use terms primary, secondary, step-up and step-down
• 4.5.6.3 — Recall and use Vp/Vs = Np/Ns
• 4.5.6.4 — Describe the use of transformers for high-voltage electricity transmission
• 4.5.6.5 — State advantages of high-voltage transmission

Supplement

• 4.5.6.6 — Explain operation of a simple iron-cored transformer
• 4.5.6.7 — Recall and use IpVp = IsVs for 100% efficient transformers
• 4.5.6.8 — Recall and use P = I^2R to explain lower cable losses at high voltage