Key learning points Electrical charges What are free electrons? Cell polarity Conventional current direction Electrons orbit the nucleus. An atom has a neutral charge, because it contains the same ...

Electronics are a hot topic today, and kids are eager to master the fundamentals of this interesting and important branch of technology. Here is a basic electronics course for kids that will teach and ...

Article 110 of the National Electrical Code (NEC) covers the general requirements for the examination and approval, installation and use, access to, and spaces about ...

Topological insulators are "strange" materials, insulators on the inside and conductors on the surface. They also have properties that make them excellent candidates for the development of spintronics ...

Conductor damage during installation is one consequence of under sizing junction and pull boxes. This damage is often not apparent until post-installation cable testing. Then, after the boxes are ...