This unit is all about electricity.
Electricity can be very dangerous.
It can hurt you, severely burn you, and even cause death. So be smart. Don't ever experiment with electrical outlets or appliances in your home or at school. All rights reserved except those which may be granted under Sections 107 and 108 of the Copyright Revision Act of 1976. This document may be freely distributed in its entirety for nonprofit purposes provided that the copyright notice is not removed.