Several permanent magnets are fixed around the rim of a bicycle wheel. A coil of wire is fixed to the bicycle frame close to the rim. As the wheel turns, each magnet moves past the coil.
State what happens to the magnetic field around the coil as a magnet moves past it.
State the electrical quantity induced across the coil as the magnet passes it.
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.