Question

with the help of the labelled diagram explain the working of electric torch​

Answer 1

• its case

The tube that houses the parts of the torch, including the batteries and lamp (light bulb).

• A plastic part, coated with a shiny aluminium layer that rests around the lamp (light bulb) and redirects the light rays from the lamp to allow a steady light beam, which is the light you see emitting from the torch.
• The flow of electricity is activated when you push the switch into the ON position, giving you light. The flow of electricity is broken when the switch is pushed into the OFF position, thus turning off the light.
• The light source in a torch. In most torches, the lamp is either a tungsten filament (incandescent bulb) or a light emitting diode (solid state bulb), also known as an LED. The tungsten filament or LED glows when electricity flows through it, thus producing visible light. Tungsten is a natural element and the tungsten filament is a very thin wire. Tungsten lamps must be replaced when the tungsten filament
• The lens is the clear, plastic part you see on the front of the torch that protects the lamp, since the lamp is made of glass and can easily be broken

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