A 4.5 nC charge is 1.6 m from a -2.8 nC charge. Q on it and an identical conducting sphere a distance of r meters away has a charge of -2Q on it. The two are then connected by a conducting wire. The electron comes to a stop in 1.4 m. A person will feel a noticeable shock if a current of 80.
Nichrome wire is used as the heating elements of toasters, small space heaters and hair dryers.
I have an 11 W fluorescent lamp over my sink that has been burning continuously since I bought my house 14 years ago. For the circuit shown below, write one loop rule and two junction rules that would allow you to solve for the unknown quantities. The following circuit is used for flashing lamps on road safety markers, in supermarket displays and so on.