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The magnetic field around a STRAIGHT current-carrying conductor:
AForms concentric circles around the wire
BForms straight lines along the wire's length
CIs uniform and equal everywhere in space
DPoints away from the wire in a fixed direction
Answer & Solution
Correct answer: A. Forms concentric circles around the wire
A straight current-carrying conductor produces CIRCULAR magnetic field lines in planes perpendicular to the wire. The strength is proportional to current and inversely proportional to distance from the wire.
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