Creating a uniform magnetic field
4 marks · NormalThe apparatus below shows two bar magnets:
Draw on the diagram the pattern of magnetic field lines in the region between the north pole of magnet 1 and the south pole of magnet 2. Label the direction of the field.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
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Must show: At least 3 straight, parallel and evenly spaced lines between N of magnet 1 and S of magnet 2, Arrows showing direction from N to S between the poles
Also accept: More than 3 correct lines or all lines clearly parallel and straight
Common mistakes: Curved/splayed lines; Lines joining like poles; No arrows
Show mark scheme and worked solution
Marking points
D1 · 2 marks · Draws at least 3 straight, parallel and evenly spaced lines between N of magnet 1 and S of magnet 2.
D2 · 1 mark · Correctly shows arrows pointing from N to S between the magnets.
D3 · 1 mark · No unnecessary field lines (e.g., none between N–N or S–S poles); neatness and clarity of lines.
Worked solution
(Student diagram should show at least 3 straight, parallel lines between the opposing poles, all arrows pointing from the north to the south pole. No lines should connect like poles.)