Batteries, Resistance And Current Lab Report

16. Play with the voltage slider and describe what happens to the current in the coil and the magnetic field around the coil.

(b) Due to the fact that R1 and R2 are identical, what would you guess is the voltage across each resistor is individually? Why?

The final 2 property points were earned for the description and discussion of specific heat.

Read the background information provided in the virtual lab by clicking on the “Information” bar in the lab simulation area.

Examine a piece of nichrome wire. On the data sheet, record the color and the luster of the metal. Use a forceps to hold the wire in the flame of your burner for about two minutes (recall where the hottest part of the flame is located). Describe the appearance of the wire while held in the hottest part of the flame. Allow the wire to cool and reexamine it. From your observations, determine if there was a physical or a chemical change. Give specific reasons for your conclusions. Save the nichrome wire for step #2.

2. How did concentration and/or volume differences affect the heat change (q) for each trial?

In Lab 8, the time constant of resistance-capacitance was measured in order to determine the charge of a capacitor. This experiment was conducted by setting building a circuit that connects the voltmeter across the resistor. The voltmeter was then connected across the capacitor. The above procedure was conducted several times using different voltages. Afterwards, the results were calculated and tabulated. The data obtained from the lab were the theoretical Tau for 5V, 4V and 3V. In this experiment, the calculated voltage was also determined. The theoretical and the calculated values were then compared and evaluated by determining their percentage errors. For example, in the 5V, the theoretical value was 1.23V; calculated value was 1.434 with a percentage error of 16.6 %( for voltmeter across capacitor).

1. In this sim, what variables are you seeing? Write the formula below, and indicate the units used to measure each one.

The conducting species at equivalence point would be the Sodium as it has the most free-range electrons and dissociates readily in solutions.4

In this experiment, we will find out how the variation of the value of an equilibrium constant with temperature can be used to determine the enthalpy (heat), entropy (randomness), and free energy (G) changes associated with the system in question.

During my visit, I participated in various experiments at the Exploratorium. But out of all of them, the penny battery intrigued me the most. I liked this particular exhibit because I have an enormous interest in electricity. Since it demonstrates properties of conductivity, I was immediately drawn to it.

Electricity flow is defined by the movement of charged particles, and though what those specific particles are differs in material devices and in the brain, they both create stimulation for particular types of work to be done. Just as electricity in a household may work to illuminate a light bulb or power a television, electricity in neurons works to communicate signals across a large cellular network.

b) How the Quantum Free Electron Theory predicts that the conductivity of metals decreases as the temperature increases.

Throughout this research paper, the reader will have a better understanding of the different forms of resistance. Also the reader will have the ability to compare the two types of resistance which were active and passive. And finally the reader will be abl

The purpose of this paper is to give a greater understanding of the semiconductor world, for Physics 100 students who have a little knowledge of electronics. I will cover conductors, insulators, semiconductors, and the operation of a diode and a transistor. The reason that it is important to understand these devices is the vast effect that they have had on our modern world. Our lives are filled by electronics, especially in this computerized age that we live in, and I have found that a knowledge of some electronics has greatly helped my understanding of the many electronic devices that we deal with on a daily basis.