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    This activity helps You understand how we can control the speed of a motor,
                     just like adjusting the speed of a real fan in their home. You also learn about

                     how electricity powers motors to create motion and how different parts of a
                     circuit, like the potentiometer, control the flow of energy.

                     Application

                     You may have noticed a knob on a mixer used to control its speed.

                     When you rotate the knob clockwise, the speed decreases, and
                     when  you  turn  it counterclockwise,  the  speed increases.  This

                     happens because the knob adjusts the amount of power supplied
                     to the motor, controlling how fast or slow it spins.

                                                                                                    21 st
                                     Building a Music Control System                             Century   #Creativity
                                                                                                       #Technology Literacy
                      Activity                                                                     Skills
                                     with Smart Circuit Kit

                     Step 1       Take out all the components from the smart circuit kit:

                                  1. Buzzer                  2. Potentiometer (Pot)  3. Battery
                                  4. Magnetic Board  5. USB Cable                            6. Battery OTG Socket

                                          Buzzer              Potentiometer                Battery

                                        USB Cable          Battery OTG Socket         Magnetic Board

                     Step 2       Put the Buzzer module on the Magnetic board.
                     Step 3       Connect the potentiometer to the negative terminal of the buzzer.

                     Step 4       Connect  the  battery,  Positive  terminal  of  the  battery  to  the
                                  potentiometer  and  the  negative  terminal  of  the  battery  to  the

                                  negative terminal of the buzzer.
                     Step 5       The  sound of the  buzzer  will  increase  on  rotating  potentiometer
                                  clockwise.

                     Step 6       Now, see the result.

                                                                            Understanding Circuits and Electronics  41

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