Current and Resistance of a Wire and the Affects When the Length Changes

In the hood, place the copper wire in 10mL of nitric acid and wait for it to dissolve. Afterwards, add 100mL of deionized water to the solution and boil the solution, so all the nitrogen oxides are removed. Place the solution to a 250.0mL volumetric flask and add deionized water to the flask until the solution is 250.0mL. When the solution in the flask is at 250.0mL place the solution in a clean plastic bottle. Now cut a penny into four pieces, and measure the mass of all the pieces together. Go back to the hood, and place the pieces of the penny into a 250mL beaker. Afterwards, add 20mL of concentrated hydrochloric acid. Wait for the hydrochloric acid to dissolve the zinc core. When the zinc has dissolved, filter the solution through the filter paper, and place the copper metal pieces into a clean 150mL beaker. In the hood, place 4mL of concentrated nitric acid in the beaker, and when the copper dissolves add, one drop at a time, 30mL of 6 M ammonium hydroxide to neutralize the nitric acid. Transfer the copper/ammonia solution to a 100.00mL volumetric flask. Prepare four different calibration

Used stirring rods to completely remove copper from that wire. And then completed the removal of copper using 5 drops of 6M HCl, adding it onto copper. There will produced copper in a solution. Connected Buchner flask to the vacuum line and place filter paper in it to completely washed off the copper. Then, add 95% ethanol to copper and leave it for 1 min and turned section back for 5 mins. Measured mass of clean, dry watch glass. Transfer copper to watch glass and dry it under heat lamp for 20 mins, allowed it to cool to room temperature and then accurately determine its mass.

a) Enter the following command in R to read a simple help page about the length() command:

If it wasn’t constant then the time, intervals wouldn’t be equal. If the current is larger, there will be more electrons flowing around the circuit and more copper will be deposited.

Namely, determining cable types and connectors, designing connection boxes and measuring required wire lengths are some of the major milestones completed during this phase. Determining the best cable type for the application is crucial for the accuracy of the measurement system. Several tests performed at NIST confirms that widely used Teflon cables, retains charge in the Tera-Ohm range resistance measurements. Therefore, for the measurement system developed, polyethylene cables were chosen to connect resistors and equipment. Furthermore, BPO (British Post Office) coaxial cable connectors were chosen as the connection method. Precision of cables and connectors are crucial for the measurement system developed. Therefore, additional testing were done to ensure the accuracy of the cables. Furthermore, the connectors were cleaned using an Ultra Sonic cleaner to remove oil and dirt that could affect the insulation. After cleaning the connectors, insulation between the terminals of the connectors was checked using the Tera-Ohm meter system at

Introduction: Voltage can be thought of as the pressure pushing charges along a conductor, while the electrical resistance of a conductor is a measure of how difficult it is to push the charges along. Using the flow analogy, electrical resistance is similar to friction. For water flowing through a pipe, a long narrow pipe provides more resistance to the flow than does a short fat pipe. The same applies for flowing currents: long thin wires provide more resistance than do short thick wires. The resistance (R) of a material depends on its length, cross-sectional area, and the resistivity (the Greek letter rho), a number that depends on the material. The resistivity

The second wire has twice the length and twice the number of turns than the first wire.

A majority of Americans are constantly worried about bills. One of the bills people are most concerned about is the electricity bill. The electric bill varies each month based on the usage of different electrical uses and appliances. Also, have you ever wondered why when you turn off one light, the light in the other room stays on? Well I will explain the type of electric circuits that is used to ensure that. I will also explain the relationship between what you use and how the duration of use can have an impact the cost of the electric bill.

Heat is a form of energy, sometimes called thermal energy, which can pass spontaneously from an object at a high temperature to an object at a lower temperature. If the two objects are in contact, they will, given sufficient time, both reach the same temperature. Heat always travels from hot to cold objects and two objects will reach an equilibrium temperature. Heat flow is commonly measured in a device called a calorimeter, an insulating container that minimizes heat exchange between its contents and the surrounding. Heat flow in a device called a calorimeter. In this experiment, we should find the heat capacity of the

The nichrome wire is silver with a sort of rusty brown color on portions of it and is not slightly shiny. When the nichrome wire was put into the heat (bunsen burner), the flame turned from blue to orange, and the wire began glowing orange in the part touching the flame. This was a physical change because the only thing that changed was the color was changed but went back to normal, thus indicating that the composition has not changed.

Starting with the mass of the copper wire, this table recorded the weight (g) along with observations that occurred throughout the procedure. At the beginning of the procedure, 4.0 mL of concentrated nitric acid, HNO3 (16 M), was added to a 50 mL beaker containing a pre-cut, pre-cleaned piece of Copper (Cu) wire. A lively reaction occurred as the Cu was disolved, forming a brown, harmful gas inside the beaker. The gas was nitric oxide. To better describe the observation is the chemical equation,

Conductor – conductor is an object or type of material that allows the flow of electrical current in one or more directions. The electrons move easily to the other side, away from the object

When tested in the lab, it was found that Advance Wire was mediocre in conductivity & abrasiveness, while also being heavier than all other samples.

When you connect the two loose ends of the copper wires to the light bulb it should light up. Just be careful when handling the wires, since there is a small electric charge running through the wires. Hydrogen gas may also be present, so don't perform the experiment near open flames or strong

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