Resistance, Parallel and Series Connections.

This Lab had the intention to demonstrate what happen when we add a resistance to a circuit or we can say to see to effect of a resistance on a circuit. It also students saw or were get an explanation about a circuit in series or parallel, and how to calculate the intensity and voltage.

This photo was a prediction to see what could happen with the lamps if they would light or not. Will light if the switch if on; but if it is off, electrons cannot flow or pass where we connected the switch and the bulb cannot light. The next two photos will demonstrate the opposite because we demonstrated the opposite of our prediction. 

The first photo shows a simple circuit that is connected in series if we see the top loop or the bottom one; but if we see it as one, we found that the two outer bulbs are in series and the third one is in parallel with those two. Although we do not see any resistance, the bulb itself has a filament that has some resistance to delay the passage of electrons, causing a light that we all use at home. 

The second photo, we did not use bulbs, but batteries either in series and parallel. 

This photo illustrated what was announced at the beginning. The top circuit is parallelly connected, and in such case, the sum of the voltage that passes through the resistance, independently of how many we have, is the same as the source voltage. In series, we found that the intensity will be the same, independently of how many resistances we have on the circuit.