The circuit in which resistances are connected end to end so that the same current flows through all the resistances is called a series circuit as shown in the figure:. Electricity has been part of our lives since prehistoric times, so it’d be misleading to say that anyone actually discovered it. Ancient man witnessed electricity in the form of lighting every time there was a thunderstorm. Some people see electricity as a powerful message from the gods, however today , electricity is more fully understood. We use electricity hundreds of times every day- when ever we flick a light switch, turn on the television or use a telephone This section. will help us to learn. basic concepts of electricity,. Voltage, Current, Resistance, Ohm’s Law which connects them .