Saturday, October 11, 2014

Lab 13 ->Dim vs. Bright Bulbs configurations, Application of Ohm's Law<-

Dim vs. Bright Bulbs configurations


   Two different configuration of circuits were set up. One configuration has dim light while the other one has the bright light. Parallel connection have most brightness while the not bright one was connected by series.

 Connected in the parallel: more powerful
Brighter parallel for bulbs configuration and series for battery connections.

Battery in parallel


    For example, think a very simple circuit consisting of four light bulbs and one 3 V battery. If a wire joins the battery to one bulb, to the next bulb, to the next bulb, to the next bulb, then back to the battery, in one continuous loop, the bulbs are said to be in series. If each bulb is wired to the battery in a separate loop, the bulbs are said to be in parallel. If the four light bulbs are connected in series, there is same current through all of them, and the voltage drop is 1.0 V across each bulb, which may not be sufficient to make them glow. If the light bulbs are connected in parallel, the currents through the light bulbs combine to form the current in the battery, while the voltage drop is 3 V across each bulb and they all glow. Materially, the wires themselves can be improved. The wires could be switched to silver material for the least amount of resistance by doing calculations using material of silver conductivity vs copper conductivity, the formula was represented as with the same cross section. 
and considered everything as constant we get: Silver constant vs Copper constant ratio. from this equation






While in the circuit for the bright light, there were two circuits made. The first one had the battery connected to one bulb with two wires and then the second bulb was connected to the first bulb using another two wires. In this circuit, the two bulbs are separated into two circuits causing less resistance.


We can see a schematic drawing of the two circuits in the picture below. This is a simpler way of looking at the circuits using basic symbols.

Different configurations shown below


As shown above, the brightest shown for series for batteries while parallel for the bulbs, while exactly the opposite for dimmist configurations: which has parallel for batteries and series for the bulbs.

2 configurations as examples shown in class
SPST: single pole single transfer.

 Setup pictures.



Calculation that supports with the graph from logger pro with deg C 53 and Tf symbolically V1/mc+T0


Interaction between positive and negative charge in 3d space.





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