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An experiment to investigate how the resistance between two copper plates immersed in copper sulphate solution varies with the surface area of the plates.
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An experiment to investigate how the resistance between two copper plates immersed in copper sulphate solution varies with the surface area of the plates. Introduction This experiment investigates how the resistance of a copper sulphate solution changes as the surface area of two copper plates (electrodes) immersed in the solution changes. The two plates will be placed in the solution and depth of the solution varied by adding solution. The voltage between the plates will be measured with a voltmeter and the current will be measured with an ammeter. The resistance will then be calculated using Ohm's law, dividing the voltage by the current. Readings will be taken every 5mm up the copper plates to give a wide range of results. Prediction I predict that when the depth of the copper sulphate solution, and hence the surface area of the copper plate immersed in the solution, is doubled, the resistance will halve. This means...
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