Answer:
1.To build a simple circuit, you will need a power source, 2 insulated wires, a light bulb, and a light bulb holder. A power source can be any type of battery or battery pack. The rest of the materials can be found at your local hardware store.
2. It is difficult when building some electric circuit, because you need to be careful incase you put it wrong
3.An electric current in a circuit transfers energy from the battery to the circuit components. ... In most circuits, the moving charged particles are negatively charged electrons that are always present in the wires and other components of the circuit. The battery pushes the electrons in a circuits
