A coil connected to a cell and a switch is placed close to a second coil connected to a sensitive ammeter. The switch has been closed for several seconds and is then opened.
What happens in the second circuit when the switch is opened?
A brief current flows as charge from the first coil passes to the second coil.
No current flows because the cell no longer supplies any current.
A brief current flows as the magnetic field from the first coil collapses.
No current flows because neither of the two coils is moving.
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.