A coil is held stationary near an electromagnet. The current in the electromagnet is gradually increased, making its magnetic field stronger. The ends of the coil are not connected to a circuit. An apprentice claims that no potential difference can be induced across the coil.
Explain why the apprentice's claim is incorrect.
92 exam-style questions on Edexcel GCSE Physics 13.1 Inducing a current, covering 13.1.1 Producing an electric current by induction, 13.1.2 Factors affecting the induced potential difference, 13.1.3 Alternators and dynamos, and 13.1.4 Microphones and loudspeakers. Each one has a worked solution and a mark scheme showing where the marks go.