Back stitch is a simple, yet effective stitch used to create continuous lines in embroidery. Here are the steps to embroider a back stitch:
1. Step 1: Start by bringing the needle up through the fabric at the beginning of the line you wish to stitch.
2. Step 2: Insert the needle back into the fabric a little behind where you started the stitch. This creates the first small stitch.
3. Step 3: Bring the needle up again where the first stitch ended, but insert it slightly behind to create another stitch.
4. Step 4: Repeat this process, making sure that the stitches are evenly spaced and aligned, creating a continuous line.
The final look of the embroidery will be a series of uniform, smooth stitches running in a straight line, providing a clean and defined outline.
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.)