A technician has four unmagnetised metal samples: brass, cobalt, gold and silver. Each sample is tested with the north pole and then with the south pole of a bar magnet.
Which sample is attracted in both tests?
Brass
Gold
Silver
Cobalt
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.