A student draws the field around a bar magnet. The curved lines are closest together near the poles, but their arrows point from south to north outside the magnet. Which change is needed?
Keep the arrows and spread the lines near the poles.
Reverse the arrows and keep the line spacing.
Keep the arrows and make the spacing equal.
Reverse the arrows and make the spacing equal.
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.