Two initially unmagnetised soft iron rods, P–Q and R–S, lie end to end. The order is magnet, P, Q, R, S. The north pole of the magnet faces P and induces magnetism in both rods. Which poles form at Q and S?
Q is south; S is north.
Q is north; S is north.
Q is north; S is south.
Q is south; S 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.