Electric Potential Lab

(a) Based on your observations, what would you expect the voltage read if you touched the DMM across both R1 and R2?

In paragraph two, it states "Pure water contains very few ions, so it does not conduct electricity well. When table salt is dissolved in water, the solution conducts very well, because the solutions contain ions.". In paragraph four, it explains how laundry ammonia can conduct electricity. It states "When ammonia dissolves in water, it reacts with the water and forms a few ions.". In conclusion, paragraph five explains more about how ammonia can cause electricity when it is put into a solution with vinegar.

One of these properties is called an electrical charge. Protons have a "positive" (+) charge, electrons have a "negative" (-) charge, and neutrons have no charge, they are neutral.

After setting the voltmeter to 20 V, we were able to determine the voltage between the 2 plates to be 2.6 V. After determining the voltage between the plates, we proceeded to record voltage of the next equipotential point per row and other points on the grid where it has no potential difference starting at point (8,9). To figure out which points had no potential difference, the voltmeter had to equate to ~0 V in order to plot the equipotential line. My partner and I repeated this process until we have a total of 7 equipotential line between the parallel plates. After we calculated for the electric field, we proceeded to plot for equipotentials and field lines of the dipole arrangement. First, we determined the voltage between the poles to be 2.87 V. Afterwards, we repeated the process as the previous arrangement by obtaining the voltage for each equipotential line and plotting for its field lines. Once we have obtained all the data needed, we proceeded to complete the latter portion of the lab

The objective of this lab was to observe the behavior of a capacitor while charging through a resistor. Overall, the objective of the lab was achieved since an exponential curve was obtained from a charging capacitor.

2. Bring the Styrofoam cup close to another person's hair. What do you observe? What conclusions can you make regarding charged Styrofoam?

2. Try increasing the resistivity of the resistor, ρ. How does this change the “look” of the resistor? Describe how that relates to the formula you just wrote (direct, indirect relationships, etc.). What happens to the value of “R” (Resistance)? Is this something that can be changed in a resistor that you would buy in a store to use in a circuit?

4. What are the benefits of using a light bulb as an indication of conductivity? What are the disadvantages? The benefits are: it acts as a confident and direct way of determining whether a solution should be classified as strong, weak, or non-electrolyte. A strong light would indicate a strong electrolyte. A dim light indicates a weak electrolyte, and no light indicates a non-electrolyte. However, the disadvantages are the lack of accuracy in each reading, and conclusions that aren’t necessarily precise. Each reading displays a different level of light for each bulb. Therefore, conductivity

1) Three equal point charges are placed at three of the corners of a square of side d as

Hence, this would allow for an influx of sodium into the cell down its electrochemical gradient. It would also allow for the flow of potassium outward, as it has a 140mM concentration inside the cell and wants to shift down its concentration gradient to 5.4mM. Therefore, this great driving force for the influx of sodium and efflux of potassium helps to explain the findings at this point. As Table 1 shows, the findings within this figure are statistically supported. The fact that there is not significant difference between the findings of this experiment and the calculated Nernst at the 10, 20 and 40mM of potassium is an indicator that sodium is the largest determinant of the resting membrane potential. However, some findings defy the expectations, as the last two concentrations elicit a resting membrane potential significantly more negative than expected. This can be explained by the fact that at this point, each muscle at their respective muscle groups has been protruded many

When I was at my neighbor’s house their TV remote batteries died. This prompted them to go to their fridge and get new batteries. When I saw the batteries in the fridge, I asked myself, “What effect do temperatures have on batteries?”. Ever since then I have wanted to know what affect extreme temperatures have on batteries. If extreme temperatures do affect batteries will batteries be able to withstand these extreme conditions? These questions prompted me to perform this experiment on batteries.

The lightning protection angle equation must be easily analyzed to finding results. However, the equation of Hasse & Wiesinger and Equal Surface area (A1 = A2) technique is long term equation and computational complexity. Essentially, the result of Hasse & Wiesinger equation is shown in radian unit which must be converted to degrees

Whenever the balance is altered, the process of transmitting electrical signals, which is called action potential initiates by carrying information across a neuron’s axon; which is called resting membrane potential. This process occurs as uneven ions distribution flow across cell membrane, creating electrical potential. As a result, the duration of active potential can be as fast as 1 ms. Similarly, the average resting membrane is between -40 mV and -80 mV. Since the membrane from inside is more negatively charged than the outside, it reflected on the negative average voltage readings of the resting membrane.

2. Miller, F.; Wilkins, C. Infrared Spectra and Characteristic Frequencies of Inorganic Ions. Ph.D. Dissertation, Mellon Institute, Pittsburgh, PA, 1952.

The threshold frequency varies with each metal. When the sodium plate was exposed to high frequency light, electrons were emitted and were attracted to the positive terminal, causing a flow of current. However, when a low frequency light was used no electrons were emitted and therefore there was no current. Observations of the Photoelectric Effect 1. Current flows as soon as the negative terminal is illuminated.