Creating a uniform magnetic field
2 marks · EasyName one piece of apparatus (other than iron filings) used to investigate the pattern of a magnetic field.
State how this apparatus is used in the investigation.
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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(a) Plotting compass · must show plotting compass
(b) The compass is placed at various points around the magnet and the direction it points is marked to trace out the field lines. · must show move compass to different points, mark direction of needle
Common mistakes: Naming an unrelated instrument
Show mark scheme and worked solution
Marking points
B1 (a) · 1 mark · Names plotting compass (accept 'magnetic compass')
B2 (b) · 1 mark · Describes moving the compass to different positions and marking the direction to trace out field lines
Worked solution
a) Plotting compass
b) Place the compass around the magnet at different points and mark the direction of the needle each time. Join up the arrows to map the field lines.