An apprentice technician is investigating the magnetic field interaction between two bar magnets placed parallel to each other on a sheet of paper, with their north poles pointing in the same direction.
Describe how the technician can use a single plotting compass and a pencil to accurately map the shape and direction of a magnetic field line in the space surrounding the magnets.
30 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.