Figure 1, below, shows this interaction between charges.įigure 1. Like charges (two positives or two negatives) repel, or push away from each other. Opposite charges (a positive and a negative) attract, or pull toward each other. Static electricity can build up on almost any material.īut do you know why the balloon sticks to the wall, or your hair stands on end? This happens because they become electrically charged, and electric charges push and pull on each other. Hair standing up on a cold winter day is another example of static electricity. If you have ever rubbed a balloon against a fabric and then stuck the balloon to a wall, that is an example of static electricity. This creates an imbalance of positive and negative charges, called static electricity. One common way is to rub two of these objects together. While electrons typically do not flow easily through insulators, it is still possible to transfer some electrons from one insulator to another. Examples are plastic, wood, cloth, glass, or dry air. Electrons do not move easily through these materials. Some materials called insulators hold their electrons very tightly. These escaped electrons are the basis of the electricity you use every day. Sometimes these electrons escape and move around between atoms or get captured by a different atom. Electrons have a negative electric charge and whiz around a positively charged nucleus (made of positively charged protons, and neutrons, which do not carry electric charge) inside atoms. They are made up of several smaller particles, including electrons. Atoms are the basic building blocks of all material around us. To understand electricity, we first need to examine the atom. We connect the devices to an outlet in the wall or load them with batteries, but what exactly is electricity? We use electric devices like lights, radios, cell phones, computers, and many, many more every day. Opposite electric charges attract like electric charges repel.Static electricity is the imbalance of positive and negative electric charges.Charged particles-often, negatively charged electrons-are the basis of electricity.
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