Electric Potential

Electric Potential

In this lab, we took conductive paper that had a line and dot painted on it with metallic paint. A voltage supplier created electric potential difference between the line and dot via alligator clips. This voltage was measured as 15.02 V (please disregard the reading on multimeter as the picture was from a previous, and failed, attempt at the experiment).

We then measured two points on the higher and lower voltage, respectively. When we measured two points on the higher voltage, the reading came out to be -0.62 V. When we measured two points on the lower voltage, we got a reading of 1.37.

Starting from the point on the right, we measured the potential difference at 1 cm intervals going towards the line. We used excel to record the data and to create a  Potential vs Position graph as shown below.

Immersion Heater

Immersion Heater

In this activity we took a 3.41 W immersion heater and submerged it in a given amount of water for 10 minutes. We were to calculate how much the change in temperature of the water would be after 10 minutes had elapsed. While we performed the calculations, the water was heated and the temperature change with respect to time was tracked using LoggerPro software. At the end we compared our experimental results with the results of the LoggerPro data. The change in temperature was indeed within the uncertainty range that we had calculated.