The given diagram illustrates the structure of LED, known as light emitting diode flashlight.
It can be seen that there are 5 main components that make the flashlight work, by the energy of the battery. All these elements rely on circuits that control the power of it. Additionally all this construction is covered with a plastic case.
It can be observed that on the bottom of the flashlight are metal springs and the top end with the light bulb. All this structure starts with a switcher, when it is pushed into the on position, It connects with metal contacts. Through this, flow of current affects work of batteries, due to metal springs. This power of the battery leads to turning the flashlight on.
In contrast, the circuit is broken when the switch changes, it causes the separation of all electricity and process. As a result the bulb is turned off.
