A technician checks a labelled permanent magnet before it is fitted inside a loudspeaker. A plotting compass has produced a trail of pencil dots outside the magnet, linking its poles labelled N and S. The final dot has been marked.
What should the technician do next to complete the field-line record?
Join the dots with straight sections and add arrowheads pointing from N towards S.
Join the dots with one smooth curve and add arrowheads pointing from S towards N.
Join the dots with one smooth curve and add arrowheads pointing from N towards S.
Join the dots with straight sections and add arrowheads pointing from S towards N.
70 exam-style questions on Edexcel GCSE Physics 12.1 Magnets and magnetic fields, covering 12.1.1 Magnetic poles, 12.1.2 Magnetic materials; permanent and induced magnets, 12.1.3 Magnetic fields, and 12.1.4 Plotting compasses and the Earth's magnetic field. Each one has a worked solution and a mark scheme showing where the marks go.