Electric Circuit

                                       Electric Circuit

We have done the simply electric circuit  the parallel and the series one.
We have used the protoboard, three LEDs three 220 ohms resistors, one 4.5 volts battery and the 9 Volts battery, red and black wires.

We had one problem, it was that only 2 LEDs turn on, but we asked to one of our mates and he solved it. It was because one of the LEDs was not connected right. 

The LEDs have 2 legs, 1 longuer than the other, the long one is connected to a different part where tho short one is connected, we used the 9 Volts battery for the series circuit because if not it does not work.