Cells, batteries, generators and motors — Difficult
Transfer your understanding to a changed context, justify decisions and check your reasoning. No hints during the test.
Includes extension practice
Chemical-to-electrical, kinetic-to-electrical and electrical-to-kinetic energy transfers are required. Detailed motor/generator construction or induction mechanisms are extension practice.
Easy, Normal and Difficult describe practice demand; they are not the official Core and Extended tiers.
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