Two common stitches in Kashida work are Satin and Chain stitches. Satin stitch is used for filling areas, while Chain stitch is used for outlining shapes.
Draw the pattern of the magnetic field lines for the two parallel straight conductors carrying current of same magnitude 'I' in opposite directions as shown. Show the direction of magnetic field at a point O which is equidistant from the two conductors. (Consider that the conductors are inserted normal to the plane of a rectangular cardboard.)