How to build an electrical circuit

Remember the main components of the circuit. Any electrical circuit must contain a current source (galvanic cell, battery, solar cell, electric generator or other element which creates an electric field, allows the movement of electric charges).

In addition, any circuit contains a consumer light bulb or any device that converts electrical energy into mechanical energy, light, heat). The source and the consumer are connected by wires (or conductors, i.e., those connecting elements, which have electrical charges).

Also in electrical circuit includes additional controls (for example, a switch or a key that closes and opens the circuit), instruments for measuring electrical quantities (ammeter, voltmeter) and protective devices (fuses). The protection elements connected to a circuit in dangerous situations.

The simplest electric circuit consists of a very small number of elements: power source, light bulb, connecting wires and switch. To self-assemble such a circuit, first connect the lamp with a current source. To do this, take the wire and connect with a lamp and a battery (power source).

Following the conductor (lead wire) connect the incandescent lamp with switch (key). Please note that key during Assembly of the circuit must be in the open position. Be careful: the switch is made of a conductive material, so touch only the insulating handle.

In order to in the circuit was an electric shock, the circuit should be closed. So you need to connect the key (switch) with a current source. One end of the connecting wire connect to the switch, and the second – to-source current. Now the electrical circuit is assembled.

The bulb does not come on just because the key is in the open position, and the circuittherefore is also open. All the elements are there, but the electric current in the circuit no. In order that the light is on, lock key.

To create a more complex electrical circuit, you will need a more powerful power source and additional items.