TASK 1:
Question: The diagram shows how an LED (light emitting diode) flashlight works.
ANSWER:
The diagram illustrates the working mechanism of an LED (light emitting diode) flashlight by showing its internal components and how electricity flows through the device.
Overall, the flashlight functions by completing or breaking an electric circuit using a simple switch mechanism. The device is powered by batteries and encased in a plastic shell, and when the circuit is completed, electrical energy flows through the components to light up the LED bulb at the top.
At the bottom of the flashlight lies a metal spring, which acts both as a physical support for the batteries and as a conductor for the electric current. Above the spring, two batteries are placed in series, supplying the necessary voltage for the circuit. When the switch is in the “on” position, metal contacts connect and close the circuit, allowing current to travel from the spring through the batteries, then up to the LED.
The switch is key to this process. When it is pressed upwards into the “on” position, the circuit is completed and the LED emits light. In contrast, when the switch is pushed down to “off,” the metal contacts are separated, the circuit is broken, and the current cannot flow, causing the flashlight to turn off.
In summary, the LED flashlight relies on a controlled electric circuit, where the switch determines whether the current flows and the bulb lights up. (227 words)
