A transformer is used to supply an inspection lamp. Its primary coil is connected to an alternating supply. The secondary coil is initially an open circuit.
Explain why an alternating potential difference is induced across the secondary coil while the circuit is open, and state what happens to the current if the secondary circuit is completed through the lamp.
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.