The size of the current flowing through a straight wire affects the strength of the magnetic field around it. State one other factor that affects the strength of the magnetic field at a point near the wire.
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Markscheme
12.1 Magnets and magnetic fields Questions
30 exam-style questions on Edexcel GCSE Physics 12.1 Magnets and magnetic fields. Each one has a worked solution and a mark scheme showing where the marks go.