A north pole moving towards a coil produces a positive voltage pulse. A student wants a negative pulse of greater peak magnitude, using the same coil and starting position.
Which change will produce this pulse?
Move the north pole towards the coil at a greater speed.
Move the south pole towards the coil at a greater speed.
Move the south pole towards the coil at a lower speed.
Move the north pole towards the coil at a lower speed.
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.