Question

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 ?

Answer 1

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