An alternating current (a.c.) step-down safety transformer is used in a workshop to power a low-voltage inspection lamp, as shown in the diagram below.
State the material used to construct the core of the transformer and explain the physical reasoning for selecting this material.
Determine the current in the secondary coil when the power output to the inspection lamp is 36 W.
Assume the transformer is 100% efficient.
Induced potential, transformers and the National Grid (physics only) (HT only) Questions
Practise AQA GCSE Physics Induced potential, transformers and the National Grid (physics only) (HT only) with exam-style questions for Foundation and Higher tier. 15 questions covering Induced potential (HT only), Uses of the generator effect (HT only), Microphones (HT only), and Transformers (HT only), matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.