Question 1: Define an electronic system in your own words.

Answer: An electronic system is a set of electronic components working together to perform a specific function or task.

Question 2: List three common components found in electronic systems and briefly describe their functions.

Answer: 1. Battery – provides electrical power. 2. Switch – opens or closes the circuit to turn the system on or off. 3. Resistor – controls the flow of current within the circuit.

Question 3: Explain the purpose of a circuit diagram and how it helps in designing electronic systems.

Answer: A circuit diagram uses symbols to represent components and shows how they are connected. It helps in designing, understanding, and troubleshooting electronic systems.

Question 4: Design Brief: You are asked to create a simple electronic traffic light system. List the main components you would need and describe their roles.

Answer: Main components: 1. Microcontroller – controls the sequence of lights. 2. LEDs – represent red, yellow, and green lights. 3. Resistors – limit current to LEDs. 4. Power supply – provides electrical energy. 5. Switch – to turn the system on or off.

Question 5: Sketch a basic plan of a circuit that includes a battery, switch, and two bulbs connected in series. Label each part clearly.

Answer: A correct sketch would show a line representing the wire connecting the battery's positive terminal to the switch, then to the first bulb, then to the second bulb, and back to the battery's negative terminal, with each component labeled.

Question 6: Describe what happens in a circuit if one of the bulbs in a series connection burns out.

Answer: If one bulb burns out in a series circuit, the circuit is broken, and all the bulbs will go out because the current cannot flow through the open circuit.

Question 7: Draw a simple diagram of a parallel circuit with one power source and three components connected. Indicate how the current can flow through each component.

Answer: A correct diagram would show a power source with three branches extending from it, each branch containing one component (like a bulb), with all branches connected back to the power source, indicating multiple current paths.

Question 8: Explain the difference between a series and a parallel circuit.

Answer: In a series circuit, components are connected end-to-end, so current flows through each component one after the other. In a parallel circuit, components are connected across the same two points, allowing current to flow through multiple paths.

Question 9: Identify and describe the function of a switch in an electronic system.

Answer: A switch controls the flow of electricity in a circuit, allowing it to be turned on (closed) or off (open).

Question 10: Sketch a simple block diagram of an electronic system that turns on a light when a sensor detects motion. Include the main components.

Answer: A suitable sketch would include a motion sensor connected to a microcontroller or relay, which then connects to a light bulb; the sensor detects motion and sends a signal to turn on the light.

Question 11: Design a plan for a basic alarm system that activates when a door is opened. List the components you will use and their functions.

Answer: Components: 1. Magnetic door switch – detects when the door opens. 2. Power supply – provides energy. 3. Buzzer or siren – alerts when triggered. 4. Microcontroller (optional) – processes the signal. The system activates the buzzer when the switch detects the door has been opened.