Day 12:  

Group Quiz!

For our quiz we were asked to put together an arrangement of various supplies in such a way that it would produce the brightest possible light. The group across from us has to do the opposite: produce the dimmest possible light. Our supplies included two batteries, four alligator wires, and two light bulbs.

We connected the two batteries in series to produce larger voltage (potential energy). This effectively doubled the voltage. Then we connected the two light bulbs in parallel which reduced resistance, as light bulbs act as resistors and resistances add in series but the reciprocals add in parallel. With less resistance the current increased with then increased the power.

We attempted to convey this arrangement with our amazing art skills. Here is the comparison between our masterpiece and the conventional schematic:

Experiment 

For our experiment, we required a power supply, a coiled conductor and a temperature probe.

Calculation :  ∆T

Temperature Vs. Time graph

The change in temperature is within our uncertainty. The graph shows that ∆T for 4.5V is around 3°C.

Our uncertainty calculation is 2.2°C±2.8. For the 9V the graph shows ∆T of around 10°C. Our calculation was 4.5±5.6.