Question 5
FA student uses a plotting compass to draw the magnetic field around a bar magnet.
The Figure shows the student's sheet of paper part of the way through the experiment.
Figure
a.[4]
Describe how the student can use the plotting compass to draw one complete field line from the north pole to the south pole of the magnet.
b.[1]
State how the student should show the direction of the magnetic field on the field line.
c.[2]
The student then places the plotting compass on the bench, a long way from the magnet.
The north-seeking end of the needle points north.
Explain why.
d.[1]
The field lines that the student draws close to the magnet are smooth curves.
Further from the magnet, the dots no longer follow the expected pattern.
Suggest why.
12.1 Magnets and magnetic fields Questions
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.