Essays Tagged: "cross sectional area"

Resitances of a wire:it is about how length effects the resistance of a wire.

stance in a wirePlanning -The resistance of a wire can be affected by certain factors:Length of wireCross sectional arearesistivity (type of metal)Type of wireTemperatureI chose to investigate how len ... f wire, the same material of wire (a preliminary experiment will help determine this), and the same cross sectional area and maintain a constant temperature of the wire as any increase in temperature ...

(3 pages) 118 1 4.5 Dec/2003

Subjects: Science Essays > Physics

Plan for Science Course Work The Resistance of Lengths of Wire

. The resistance of a wire is directly proportional to its length and inversely proportional to its cross-sectional area. Resistance also depends on the material of the conductor. The resistance of a ... the overall effect of measuring the potential difference of the whole circuit instead of just that across my wire I have to use what results I have. Unfortunately no one else in the class carried out ...

(6 pages) 71 0 4.1 Feb/2004

Subjects: Science Essays > Physics

Resistance of a Wire

volts and "I" is current inamperes.L:- Is the length of the nichrome wire used in metres.A:- Is the cross-sectional area of the wire in metres square and can be determined using the equation A= ??d2 w ... hrough the origin where "m" is the gradient of the st. line graph and corresponds to ?/A. Since the cross-sectional area of the wire can be found by knowing it´s diameter. Therefore the resistiv ...

(4 pages) 33 0 4.3 Apr/2004

Subjects: Science Essays > Biology

Restistance of Nichrome wire

scovered that the current flowing through a metal wire is proportional to the potentail difference across it, it basically means if you double the potential difference you double the current. The thin ... d to push a current through the wire, the resistance of a wire is calculated by:Resistance, R= p.d across the wire(V) /current through the wire(I)Their are four factors affecting resistance they are:1 ...

(2 pages) 29 0 3.0 Jun/2004

Subjects: Science Essays

Physics Coursework Theory - The resistance of a wire.

Theory behind my experimentThickness (cross sectional area of the wire), length, and temperature all have some effect on the amount of res ... than others. As long as I use the same type of metal for each wire, my experiment will remain fair.Cross Sectional AreaThe thicker the wire, the less resistant it is. This is because there are more e ...

(1 pages) 25 0 5.0 Dec/2005

Subjects: Science Essays > Physics

Length affects the resistance

mperature at which wire is at* The material of which wire is made out of* The potential difference across circuit* Cross sectional areaThese must be kept constant (except the length of the wire). The ... packed together, the electrons will have more collisions and therefore more resistance.4) Diameter/Cross sectional area A good example to illustrate this where two cars are traveling down a dual lane ...

(14 pages) 36 0 5.0 Feb/2006

Subjects: Science Essays > Physics

Was Aristotle The First Physicist?

er, such as free fall. Aristotle stated that the terminal velocity is inversely proportional to the cross-sectional area, instead of the radius. And in place of the coefficient of viscosity, he used t ...

(1 pages) 443 0 0.0 Feb/2008

Subjects: Humanities Essays > Philosophy > Classical Philosophy

Reynolds Experiment

efined if the volume flow rate Q was measured by capturing the flow in a bucket, and divided by the cross-sectional area of the pipe, A. In the first fluid flow rate in the downstream direction, the d ... g. 2.3a) is characterized by the absence of lateral or macroscopic mixing of adjacent fluid layers, cross currents nor eddies or swirls. The particles of the fluid are moving in definite and observabl ...

(8 pages) 13 0 5.0 Aug/2008

Subjects: Science Essays > Engineering > Chemical Engineering

Conductivity

;, which is dependent on the nature of the conductor, L is the conductor’s length and A is its cross-sectional area.It is often more convenient to work with conductivity rather with resistivity. ...

(4 pages) 6 0 0.0 Sep/2008

Subjects: Science Essays > Chemistry