A manufacturer places two samples in a strong magnetic field. One sample is a steel strip for a magnetic cupboard catch. The other is an iron rod for the core of an electric bell. Which observation is expected when the samples are removed from the field?
The steel strip keeps most of its magnetism; the iron rod loses almost all of its magnetism.
The steel strip and the iron rod both keep most of their magnetism.
The steel strip and the iron rod both lose almost all of their magnetism.
The steel strip loses almost all of its magnetism; the iron rod keeps most of its magnetism.
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.