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    BRIDGE BACK
                      1.  If you want to create a pencil holder in Tinkercad, which shapes would you combine and how?

                      2.  How can  changing  the  height  and  width  of a  cylinder  in  Tinkercad  make  it  look  like  a  coin  or
                         a drum?

                     In this chapter, you will learn how circuits work by creating simple projects like lighting up
                     LEDs and using switches in Tinkercad. You will also discover how microcontrollers and Arduino
                     control these circuits.

                            WHAT IS A CIRCUIT?

                     A  circuit is  a pathway  for electricity  to  flow.  It is  made up  of different
                     electrical components that are connected to allow electric current to pass
                     through.  Circuits  are used  in  electronic  devices, robots  and  machines  to
                     make them work.

                     TYPES OF CIRCUITS
                     There are two main types of circuits:

                                           Series Circuit

                                           In  a series  circuit,  all  components  are connected  in a single path. The
                                           electricity flows through each component one by one. If one component
                                           fails or is turned off, the entire circuit is interrupted. For example, if one bulb
                                           in Christmas lights goes out, all the lights turn off.

                     Parallel Circuit

                     A parallel circuit has multiple paths for electricity to flow. Each component is
                     connected to its own independent path. If one component stops working, the
                     others continue to function. For example, in a house, if one light bulb burns out,
                     the other lights stay on.

                            TINKERCAD CIRCUIT

                     Tinkercad Circuit is an online simulation tool that allows users to design, build and test electronic
                     circuits without using physical components. It is part of Tinkercad, a beginner-friendly platform by
                     Autodesk for learning electronics, coding and 3D design.

                                                                                                                      161
                                                                                         Designing Circuits with Tinkercad

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