A concealed permanent bar magnet has ends P and Q. P repels end R of a second permanent magnet. The north-seeking end of a compass is attracted towards R. Which poles are P and Q?
P is north; Q is north.
P is south; Q is south.
P is south; Q is north.
P is north; Q is south.
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.