Plastic wrap becomes electrically charged when pulled from

Solution 7E Step 1: First, we should understand how plastic wrap is getting charged when it is pulled from the box. This is due to the static electricity, which will generate inside the plastic wrap as a part of friction between the box when it is pulled. If it is pulled from the box, charge transfer will take place between the box and the plastic wrap. As a result, it will gain some additional electron. So, the plastic wrap will be negatively charged. Since, the box has some loss of electrons, it will be positively charged.