Tuesday, February 26, 2013

Aim Of Technology

1.> To Study the temperature colony of electrical bulwark.

2.> To Study the factors on which ingrained resistance of primary cell depends.




AIM
To Study the temperature dependence of electrical resistance.

Requirement
An Ammeter (0-3 A) A Voltmeter (0-5 A)
A Resistor (eureka,constantan,manganin etc.)
Sand wallpaper One Way Key
Battery
Low Resistance Rheostat
Tripod Stand
Burner inwardness Lamp
Beaker Mustard Oil
Thermometer Stirrer

Wire Gauge Iron Stand
ICE



PREREQUISITES
galvanic Resistance of conductor is termed as an contrary or obstructer to the flow of free electron or charge carriers when a potential is applied across the conductor.
The Collisions of electrons with one another as well as with the atoms of the conductor is the main cause of opposition to the flow of electron.
If the heat heftiness is supplied to conductor, then kinetic energy of free electrons increases and hence, velocity of electrons increases.
Therefore, Number of Collision of electrons may increases callable to random increase in their velocities.
As a depart of it, the eternal sleep time reduces.

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THEORY
From the deduction of Ohms Law, we know that the resistance of a metallic conductor is inclined by:-
R=MneƂ²tla
For a given specimen (a conductor), if on heating the conductor, the relaxation time reduces.
Hence, the resistances of the conductor increases according to the above formula.
Ohms legality circuit could be used with some special render for heating the resistor as will be given in procedure.

SYSTEMATIC STEP TO PERFORM THE EXPERIMENT
1. Set up the experiment as given in Figure masking circuit diagram.
2. Dip resistance wire mounty in anele.
3. First of all, place the beaker on ice then the temperature of oil starts falling.
4. Stir the oil constantly and take the observation for emf and the current at various...If you want to get a full essay, order it on our website: Ordercustompaper.com



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