A copper disc is attached to a laboratory flywheel. The disc is an electrical conductor.
As the flywheel rotates, part of the disc passes between the poles of a stationary magnet without touching it. The flywheel stops sooner when the magnet is in position than when the magnet is removed.
Explain how energy is transferred as the flywheel slows while the magnet is in position.
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.