What is the role of the power source in a flash... - JSS1 Basic technology Electrical Projects - Flashlight Question

The power source, typically batteries, provides the necessary voltage to drive the electrical current through the flashlight circuit. Batteries store chemical energy and convert it into electrical energy when the circuit is completed by closing the switch. In most flashlights, batteries are connected in series to increase the total voltage output, ensuring the light source receives sufficient power. The choice of batteries, such as AA or AAA, affects the voltage and duration the flashlight can operate. Without the power source, the circuit would be incomplete, and the flashlight would not function.