The current in a wire essay

Ionization Energy Theory of Electricity There is an equal number of electrons and protons in an atom.

The current in a wire essay

By running a constant voltage through the wire, I will be able discover the resistance of it with Ohms law, because of the constant voltage, and the fact I will know the resistance of the circuit using the variable resistor.

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I will maintain a constant, low voltage output from the power pack, so the voltage is not too high to be read by the voltmeter. I will connect the first wire, then run the pre determined voltage through it, waiting a short time until the ammeter has rested upon one result, and then record that result.

I shall take 7 readings, each following the same procedure as the first, each of which will be of a different wire diameter. I will be using the following 7 wire sizes: To ensure that these are in fact the correct diameters, as part of my pre-test, I shall use a micrometer to accurately read their diameters in 3 different places, and therefore work out an average thickness.

The current in a wire essay

If time permits I will perform more tests on each wire, so I can work out an average, and possibly discount anomalous results. To ensure the reliability and accuracy of the results, I shall keep the other variables at constant levels. I will also only change the diameter in controlled amounts.

My graph shall also enable me to ensure the reliability of my results, as a graph shows all anomalies, which can be disregarded from my results.

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Also, to ensure the fairness of this test, I shall endeavour to make the wire a smooth as possible, as it will be fairly kinky, having been connected to a ruler for several years. This will make sure my wire is as close to 1metre long as possible. To make this test safe I shall: I have performed a pre-test to familiarise myself with the equipment, and also to test variousIf the current in the loop is in the anticlockwise direction, a north pole is formed and if the current is in the clockwise direction a south pole is formed.

| A current carrying conductor in the form of a rectangular loop behaves like a magnet and when suspended in an external magnetic field experiences force.

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The text of William Kingdon Clifford’s “The Ethics of Belief” is based upon the first edition of Lectures and Essays, Macmillan and Co., , edited by Leslie Stephen and Frederick text of William James’ “The Will to Believe” is based upon the first edition of The Will to Believe and other essays in popular philosophy, Longmans.

How the Length of a Wire Affects Its ResistanceIn my physics coursework I am going to investigate the effect of the length of a wire on its resistance. Resistance is the measure of how easy it is for current to flow through a wire.3/5(2).

Results Wire Voltage (V) Current (A) Copper Conclusion From these results, I have decided that 1 volt is the best idea. This is because it will still show many readings, but will not overheat the wire.

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