Electrical Conductivity Of Metal Rod
Project Information
- Category: HIGHER EDUCATION LAB EQUIPMENT
- Sub Category: PHYSICS LABORATORY
- Model Number:
- Category: HIGHER EDUCATION LAB EQUIPMENT
Description
Principle and Working:
- The heat conduction occurs due to the temperature difference between different locations of a body. In this setup a one-dimensional temperature gradient along a copper and aluminum rod is investigated. The quantity of heat dQ transported with time dt is a function of the cross-sectional area A and the temperature gradient dT/dx perpendicular to the surface is defined as:
dQ/dt - A (dT/dx)
- At room temperature T the conduction electrons in metal have a much greater mean free path than the phonons. For this reason heat conduction in metal is primarily due to the electrons. The relationship between the thermal conductivity A and the electrical conductivity is established by the Wiedmann-Franz law:
λ /σ = LT
- Where L is Lorenz number.
Technical Details
Experiment:
- To determine the heat capacity of the calorimeter.
- To study the thermal conductivity of copper ard aluminum in a constant temperature gradient.
- To determine the electrical conductivity of aluminum and copper by plotting a current-
- voltage characteristic curve.
Apparatus Supply:
- Conductivity rod Cu
- Conductivity rod Al
- Power supply 20Amp
- Micro Voltmeter
- Connecting lead 4Nos
- Working Manual
- BNC to Banana Pug 1Nos.
Clients
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