What circuit is in a torch?

A typical torch (or flashlight) circuit consists of a power source (usually batteries), a light-emitting diode (LED) or incandescent bulb, and a switch. The circuit allows current to flow from the batteries to the light source when the switch is activated. Some torches may also include additional components like resistors to control brightness or a reflector to focus the light beam. In more advanced models, features like rechargeable batteries and circuit protection may also be present.