An electrostatic air cleaner contains a transformer. The transformer is 100% efficient.
The primary coil has 800 turns and the secondary coil has 80 000 turns. The potential difference across the primary coil is 230 V and the current in the primary coil is 0.12 A.
Calculate the potential difference across the secondary coil and the current in the secondary coil.
96 exam-style questions on AQA GCSE Physics 7.3 Induced potential, transformers and the National Grid (HT only), covering 7.3.1 Induced potential (HT only), 7.3.2 Uses of the generator effect (HT only), 7.3.3 Microphones (HT only), and 7.3.4 Transformers (HT only). Each one has a worked solution and a mark scheme showing where the marks go.