Stains on embroidered products must be removed carefully to preserve both the fabric and the embroidery. Here are some steps to follow:
1. Pre-treat the Stain: Gently dab the stain with a clean cloth soaked in water. Avoid rubbing, as this could damage the delicate threads. For stubborn stains, use a mild detergent or stain remover on a small, inconspicuous area to test for colorfastness.
2. Hand Wash: Wash the embroidered fabric by hand in cold water. Avoid using harsh chemicals or bleach, as these can damage the threads and colors. Use a mild detergent suitable for delicate fabrics.
3. Dry Carefully: After washing, press the fabric with a towel to absorb excess water, then air-dry it flat. Avoid wringing or twisting the fabric.
4. Iron with Caution: Iron the fabric at a low temperature, placing a cloth between the iron and the embroidery to prevent direct contact with the heat. By following these steps, stains can be removed without harming the delicate embroidery.
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.)