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    3.  State the use of a photoresistor in a smart lamp project.

                        4.  Differentiate between a series circuit and a parallel circuit.

                        5.  Explain any two components of the Arduino UNO board.

                     COMPETENCY-BASED QUESTIONS                                                    Century   #Critical Thinking
                                                                                                    21 st
                                                                                                    Skills  #Technology Literacy
                     1.  Vinay is working on a tech project and he came across Arduino, but he is confused about which
                        board he should use for his project. Which Arduino board should he use if he is working on a
                        wearable project?
                     2.  Soumya is working on an electronics project in Tinkercad, but she is not sure where
                        to connect the positive voltage. What will you suggest to her to correctly connect the
                        LED in the circuit?

                                  LAB LEARNING                                                21 st
                                                                                             Century   #Critical Thinking
                                                                                              Skills
                            Create a Traffic Light System using Tinkercad Circuits. To create the system, do
                            the following tasks:
                            (a)  Set up a breadboard with three LEDs (Green, Yellow, Red) connected to an
                                 Arduino board.

                            (b)  Write the Arduino code to control the traffic light sequence.
                            (c)  Add a delay function to control the duration each light stays on.

                            (d)  Test and simulate the circuit to ensure the traffic light sequence works correctly.

                                                                                                                      177
                                                                                         Designing Circuits with Tinkercad

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