9April2014

In Class Quiz

This is the diagram for our attempt to create a very dim light.

Here is a more efficient method for creating a very dim light was setting the bulbs in series with the batteries in parallel. 

This is the circuit diagram for the configuration of a dim light set up. YAY!!

4.5 V verses 9 V

 This is the graph for the set up of water being powered with two different voltages in order to find a temperature difference and compare the results.

Using 4.5 V we were able to heat the water and determine the power, heat, and temperature difference. From these calculation we found the uncertainty in order to compare the percent uncertainty.

Using 9 V we were able to heat the water and determine the power, heat, and temperature difference. From these calculation we found the uncertainty in order to compare the percent uncertainty. 

Two different values of resistance were used in the experiment due to the variation in resistivity data. therefore four different percent uncertainties were calculated and we found they all ended up being the same. Basically doubling the power did not affect the uncertainty because the uncertainty is related to the system. 

The correct value for the resistively was 5.96 ohms base on our calculations ant the temperature difference from the graph.