Question

Two point charges 2q and 8q are placed at a distance r apart. where should a third charge -q be placed between them so that the electrical potential energy of the system is minimum

Answer 1

This is a document for everyday use of electricity in a household. Many circuits are a mixture of electrical, mechanical, and electronic components, which interact in different ways to produce strange and useful effects. Topics include commercially generated AC as well as AC generated from inverters for alternative power use (such as off-the-grid homes, cabins or recreational vehicles.) Electricity has become an integral part of life and difficult to imagine to be without it.