Exam-style question
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Which of the following best illustrates a radial field pattern in a magnetic context?.
- A.Field lines around a long straight wire
- B.Field lines between the poles of a bar magnet
- C.Field lines around a point magnetic dipole
- D.Field lines in a uniform magnetic field
Model answer
What a good answer should say
- Field lines around a point magnetic dipole
Explanation
Why this works
Define both: A radial field has lines radiating from a point; a uniform field has parallel lines. Identify key difference: A point magnetic dipole produces a field that spreads out in all directions from the dipole, resembling a radial pattern.
Explain when each applies: Long straight wires produce circular, not radial, fields; bar magnets produce a dipole field but the lines are not purely radial. Conclude: The field around a point magnetic dipole best matches a radial pattern.
Common mistake
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