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    • Battery                                   • USB Cable

                                   • Battery OTG Socket                        • Magnetic Board

                                   • 2 Jumper wire

                      Step 2       Place the buzzer and switch in series on the magnetic board.

                      Step 3       Attach  the  2 jumper  wires to  the  negative  terminals  of the

                                    buzzer.

                      Step 4       Attach the 2 jumper wires to the negative terminals of the push
                                    switch.

                      Step 5       Connect the battery. Attach the positive terminal of the battery
                                    to the switch and the negative terminal to the negative terminal

                                    of the buzzer.

                      Output

                      When the push switch is pressed, the buzzer makes a
                      sound, like a doorbell ringing. When the switch is not

                      pressed, the circuit is open, and the buzzer is silent.

                      Concept

                      This activity helps students understand how a push switch can be used
                      to control a buzzer. The circuit is completed when the switch is pressed,

                      allowing electricity to flow from the battery to the buzzer, making it ring.
                      Students discover that when the switch is not pressed, the circuit is open,

                      and no sound is made. This introduces students to the idea of open and
                      closed circuits in real life.

                           38    RoboGenius (V1.0)-II

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