O-LevelPhysicsMagnetism5054/12 · Oct/Nov 2024 · Q341 Mark
A straight vertical wire carries a current in the direction shown. [Figure] What is the pattern of the magnetic field around the wire seen by an observer viewing the wire from the position shown?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
AConcentric circles with clockwise field arrows, with a dot in the center indicating current out of the page.
BConcentric circles with anticlockwise field arrows, with a dot in the center indicating current out of the page.
CConcentric circles with clockwise field arrows, with a cross in the center indicating current into the page.
DConcentric circles with anticlockwise field arrows, with a cross in the center indicating current into the page.
✓ Correct answer
D: Concentric circles with anticlockwise field arrows, with a cross in the center indicating current into the page.
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