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A straight conductor carrying current pr...

A straight conductor carrying current produces a magnetic field around it. Does it possess a north or a south pole similar to a bar magnet ?
what shape should be given to the conductor so as to have magnetic poles ?

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Recall the definition of magnetic poles . In a bar magnet , its strenght is concentrated at the earth.
Compare the magneic lines of force due to bar magnet and a current carrying conductor.
How does the shape of magnetic lines of force change when a current carrying condutor is bent to form a circular coil ?
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