Transformers 3.5 / 5 based on 2 ratings ? PhysicsTransformersGCSEAQA Created by: kennedylilyCreated on: 12-03-16 09:38 What do transformers use to change potential difference? Electromagnetic induction 1 of 13 Which type of current do transformers only work on? AC 2 of 13 What three things do transformers need to work? Primary coil, secondary coil and an iron core 3 of 13 What do step-up transformers do? Step up voltage 4 of 13 Which coil has more turns in a step-up transformer? Secondary coil 5 of 13 What do step-down transformers do? Step down voltage 6 of 13 Which coil has more turns in a step-down transformer? Primary coil 7 of 13 Which coil produces a magnetic field? Primary coil 8 of 13 Where does the magnetic field stay in a transformer? In the iron core 9 of 13 In which coil is the alternating current? Primary coil 10 of 13 What does the rapidly changing field induce? An alternating potential difference across the secondary coil 11 of 13 What does the iron core do? Transfers the changing magnetic field from the primary to the secondary coil 12 of 13 Does electricity flow round the iron core? No 13 of 13
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