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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.

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