A permanent magnet is built into a workshop tool rack. A steel chisel close to the rack becomes an induced magnet. A second permanent magnet can also be brought close to the magnet in the rack.
Which statement correctly compares the forces exerted by the magnet in the rack?
The rack magnet repels the second permanent magnet when like poles face, but may attract or repel the induced chisel.
The rack magnet may attract or repel the second permanent magnet, but it attracts the induced chisel.
The rack magnet produces a field only while the steel chisel is close, and the chisel is attracted to it.
The rack magnet attracts the second permanent magnet when like poles face, and it attracts the induced chisel.
80 exam-style questions on AQA GCSE Physics 7.1 Permanent and induced magnetism, magnetic forces and fields, covering 7.1.1 Poles of a magnet and 7.1.2 Magnetic fields. Each one has a worked solution and a mark scheme showing where the marks go.