Question

A magnetic field produced by loop of conducting wire is large than stright conducter

Answer 1

The magnetic field produced by a current carrying wire at a given point depends directly on the current passing through it. Therefore if there is a circular coil having n turns, the field produced is 10 times as large as that produced by a single turn. This is because the current in each circular turn has same direction, and in the field due to each term just accept producing a strong magnetic field.