We often hear that the human body has a weak electrical charge. Is it a positive charge or negative charge? Or maybe different parts of me have different electrical charges? Or maybe there's a complete electrical circuit inside of me?
Now suppose I scuff my feet on the carpet and touch metal objects to make sparks. Does any of that affect my electrical charge? Which direction do the sparks travel?
Or maybe a buildup of static electricity is a completely different phenomenon from inherent electrical charge. Even so, why doesn't the buildup of static electricity interfere with my internal electrical flow? It certainly does with old TVs and electronic equipment!
What if two people are scuffing their feet on the carpet and touching each other? You would think that both people, being electrically identical, would have the same charge. Why then would there be a spark at all? And which direction would the sparks travel?