A researcher is using a magnetic field sensor to investigate the magnetic field strength at a point in the empty space surrounding a long, straight conductor carrying a stable electric current.
State one physical parameter, other than the current, that can be altered to change the magnitude of the magnetic field strength measured by the sensor.
Practise Edexcel GCSE Physics Magnets and magnetic fields with exam-style questions for Foundation and Higher tier. 100 questions, matched to the Edexcel GCSE Physics (1PH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.