Finding the equivalent resistance if there was no wire in the middle, would 20 ohms resistance be in series with 60 ohms resistance as well as 30 ohms be in . The longer a wire is the more resistance it has due to the longer path the electrons have to flow along to get from one end to the other the larger the cross sectional area, the lower the resistance since the electrons have a larger area to flow through. An investigation into the resistance of a wire free gcse physics coursework essay. The electrical resistivity of graphite finally, place the contacts at the ends of the wide line and measure the resistance # of cm 8 4 2. To investigate the factors of affecting the resistance of a wire essay sample aim: to investigate the factors of affecting the resistance of a wire.
Resistance occurs when the electrons travelling through the wire collide with the atoms of the wire these collisions slow down the flow of electrons causing resistance resistance is a measure of how hard it is for the electrons to move through the wire. Labview register for the community it appears that the ni-9219 provides a small current in either 4-wire or 2-wire resistance measurement mode what is the . Sep 2, 2017 - you can vary the p an investigation into the resistance of a wire - gcse physics physics coursework resistance of a wire conclusion dec 30 searches related to gcse physics coursework resistance wire.
Round wire resistance calculator calculates the dc resistance of a single round wire of common conducting materials using the formula below conductor m aterial:. We will write a custom essay sample on the resistance of a wire specifically for you for only $1638 $139/page. View essay - 3-2 essay from hcm 420 at southern new hampshire university hcm420 3-2 essay: negligence case analysis john doe southern new hampshire university three scenarios are given to the death.
3 students should come to understand that the resistance of a wire depends on its length, its cross sectional area, and the material out of which it is made with . I) super-conductor ii) two factors which affect the resistance of a wire is: 1 length of the wire, 2 area of cross section of the wire. - an investigation into the resistance of a wire free gcse physics coursework essay video: free resistance of wire essays and papers (video). Wire resistance calculator & table highest expected resistance for 2-wire: write an essay response to our question for a chance to receive $1,000 towards . We will write a custom essay sample on the resistance of the wire specifically for you for only $1638 $139/page order now.
Copper wire resistance and voltage drop awg stands for american wire gauge and is a standardized wire gauge system used in the us since 1857 for diameters of round, nonferrous, electrically conducting wire. Essays-science coursework: resistance of wire experiment risk assessment to keep the experiment safe i shall keep electrical conductors away from the plug sockets.  had attempted to investigate how wire stress affects the resistance response as all experiments in  and  were performed at constant load levels additionally, the electrical. Consider two copper wires with the same cross-sectional area wire a is twice as long as wire b how do the resistivities and resistances of the two wires compare.
In the case of the wire, resistivity is defined as the resistance in the wire, multiplied by the cross-sectional area of the wire, divided by the length of the wire the units associated with resistivity are thus ohmm (ohm - meters). By looking at my results i can tell that there is a relationship between the resistance and the a) length of the wire b) thickness/swg of the wire c) type of material (resistivity). The resistance of a wire is given by the equation r = ρ l / a where ρ is the resistivity of the metal from which the wire is made, l is the length of the wire. Factors affecting the resistance of wire essay energy is needed for the current to pass through the wire resistance is a measure of how much energy is .
The resistance of a wire - sample essay this will also allow a reading for 100 cm to be taken method 1-place the crocodile clips connecting the wires to the constantan as close together as possible on the constantan. Tetracycline resistance by normal human intestinal flora has exploded from 2% in the 1950s to 80% in the 1990s kanamycin, an antibiotic used in the 1950s, has become clinically useless as a result of the prevalence of kanamycin-resistant bacteria. A quick reference guide to cable resistance for the american wire gage  the first table shows wire gauge vs resistance per 1000 feeta fast and easy way to see the wire resistance changing as the wire gage changes. The resistance of the 15 cm wire is approximately one-half the resistance of the 30 cm wire 2) your instructor will show you how to connect the nichrome wires together in series with a 3-battery tray.
Which leads to the two reasons to select the correct gauge wire resistance or wire current carrying capacities data or signaling use resistance per gauge, while power lines use current carrying ability. Free essays regarding factors affecting resistance wire for download 26 - 50.