A bar magnet is placed horizontally with its North (N\text{N}N) pole on the right. Two soft iron nails are attracted to the magnet, forming a horizontal chain as shown in the diagram.
Which option correctly describes the magnetic poles induced at points XXX, YYY, ZZZ, and WWW?
X=North (N)X = \text{North (N)}X=North (N), Y=South (S)Y = \text{South (S)}Y=South (S), Z=North (N)Z = \text{North (N)}Z=North (N), W=South (S)W = \text{South (S)}W=South (S)
X=South (S)X = \text{South (S)}X=South (S), Y=North (N)Y = \text{North (N)}Y=North (N), Z=South (S)Z = \text{South (S)}Z=South (S), W=North (N)W = \text{North (N)}W=North (N)
X=South (S)X = \text{South (S)}X=South (S), Y=North (N)Y = \text{North (N)}Y=North (N), Z=North (N)Z = \text{North (N)}Z=North (N), W=South (S)W = \text{South (S)}W=South (S)
X=North (N)X = \text{North (N)}X=North (N), Y=North (N)Y = \text{North (N)}Y=North (N), Z=South (S)Z = \text{South (S)}Z=South (S), W=South (S)W = \text{South (S)}W=South (S)
Magnets and magnetic fields Questions
Practise OCR GCSE Physics Magnets and magnetic fields with exam-style questions for Foundation and Higher tier. 45 questions, matched to the OCR GCSE Physics (J249) specification and written in Paper 1 and Paper 2 (Foundation Tier) or Paper 3 and Paper 4 (Higher Tier) 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.