It is true that eating a diet rich in fresh fruits and vegetables, whole grains and lean meat are good ideas. But this isn't new information. This is what doctors and health experts have been recommending for years. The clean eating diet goes further encouraging the use of only organic products.
The circuit is called 'closed' when the current flows in the circuit, and when the current does not flow, it is called an 'open circuit'. The switch or key helps to make or break the circuit, i.e. switches on or switches off the current. Sub Topics. 1  Components of An Electric Circuit.  Series and Parallel Circuits.
A traditional mechanical switch either enables or disables the flow of electricity by physically connecting (or disconnecting) two ends of wire. In a transistor, a signal tells the device to either conduct or insulate, thereby enabling or disabling the flow of electricity. This property of acting like an insulator in some circumstances and like a conductor in others is unique to a special class of materials known as âsemiconductors.â.