TO FIND THE DIRECTION OF MAGNETIC FIELD AND FORCE WHAT SHOULD BE DONE

The direction of magnetic field can be found out using right hand thumb rule.
i.e. if the thumb points in the direction of the current, the curling of the fingers give the direction of the magnetic field around the current carrying coil.

Further, the direction of the Force can be found out by the Flemming's Left hand rule. i.e. if the first finger depicts the direction of the magnetic field and the middle finger depicts the direction of motion of the charge, then, force is given by the direction in which the thumb is pointing, all three being mutually perpendicular to one another.

Thanks and Regards
Apoorva Arora
IIT Roorkee
askIITians Faculty