Question

what is the direction of magnetic field at the centre of circular coil carrying current;(i)in anticlockwise direction (ii) in clockwise direction

Answer 1

If the current is moving in the plane of paper and it moves in
1=>ANTICLOCK WISE
Direction will be moving out of plane of paper

2=>CLOCKWISE
Direction will be moving in of plane of paper

All you have to do is to following right hand rule

Answer 2

A clockwise current will produce a magnetic S pole while anticlockwise would produce a magnetic N pole.