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Electrical circuit

Let's build a simple electrical circuit

Material:

- bulb,
- cables,
- battery,

Instruction:

Connect the two cables with battery - the first to the electric charge "+" ( metal part with +) and the other to an electrical charge "-". Then two wires connect to the bulb.

After closing the circuit bulb will light.

Explanation:

Electrical current flows from the guides of higher potential to lower potential. To make this possible, in a closed loop must be an element that ensures supply of charge carriers of the points with a lower potential to a higher potential point in a direction opposite to the running of the electric field on them. This requires the input of energy and happens in the elements known as power sources. A source of energy in the circuit can be for example a battery.


An electrical circuit is a special type of network. Has a closed loop giving a return path for the current. If too much current flows through the filament of the bulb, it may burn.