Current and Resistance Physics Investigation Aim: Investigate how the length of a wire affects the current and resistance of a wire. Prediction and Hypothesis: I think as you increase the length of the Constatan wire‚ you also increase the amount of resistance. The current is the flow of electrons; the current is dependent on the amount of voltage‚ which is applied. Voltage is the push given to the current. The current has to go through a circuit‚ which contains resistance so if you increase
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Coursework - Resistance of a Wire Coursework Introduction (Theory) In this piece of Coursework I am going to investigate the resistance in a piece of wire. Resistance is the force that slows down the flow of electrons; this can be due to electrons colliding. The total length of the wires will affect the amount of resistance. The longer the wire‚ the more resistance that there will be. This is also true for thickness of wire; the thinner the wire is the more resistance. Resistance is measured
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GEORG SIMON OHM Georg Simon Ohm (16 March 1787 – 6 July 1854) was a Bavarian (German) physicist and mathematician. As a high school teacher‚ Ohm began his research with the new electrochemical cell‚ invented by Italian scientist Alessandro Volta. Using equipment of his own creation‚ Ohm found that there is a direct proportionality between the potential difference (voltage) applied across a conductor and the resultant electric current. This relationship is known as Ohm’s law. Ohm died in Munich
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How Does The Legnth Of A Wire Affect Resistance In A Circuit? Physics Investigation Aim: To measure how the length of a wire affects the amount of resistance when an electrical current is passed through it. Background Information: What is an electrical current When a full circuit is created (i.e. a continuous loop has been made connecting the negative end of an electrical source to the positive) it creates a path for electrons to pass through. These electrons need a "push"
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Wire A wire is a single‚ usually cylindrical‚ flexible strand or rod of metal. Wires are used to bear mechanical loads or electricity and telecommunications signals. Wire is commonly formed by drawing the metal through a hole in a die or draw plate. Standard sizes are determined by various wire gauges. The term wire is also used more loosely to refer to a bundle of such strands‚ as in ’multistranded wire’‚ which is more correctly termed a wire rope in mechanics‚ or a cable in electricity. Although
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Practical Report: Experiment: Ohmic Resistance and Ohm’s Law Patrick Doan Mr Sadowsky 11 PHYS 71 12/9/08 Table of contents 1.0 Aim 1 2.0 Hypothesis 1 3.0 Materials 1 4.0 Method 2 5.0 Results 3 - 5.1 Qualitative Observations 3 - 5.2 Data 3-4 6.0 Discussion 5 7.0 Conclusion 6 8.0 Bibliography 7 9.0 Acknowledgements 7 1.0 Aim: To find out how current‚ voltage and resistance in a circuit are related‚ also
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GCSE Physics Coursework - Resistance of a Wire Coursework Resistance of a Wire Task To investigate how the resistance of a wire is affected by the length of the wire. Theory What is resistance? Electricity is conducted through a conductor‚ in this case wire‚ by means of free electrons. The number of free electrons depends on the material and more free electrons means a better conductor‚ i.e. it has less resistance. For example‚ gold has more free electrons than
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Research Paper – Georg Ohm Georg Ohm was a German physicist born in March of 1789. Georg came from a Protestant family. His father who was a locksmith Johann Wolfgang Ohm‚ and his mother who is Maria Elizabeth Beck‚ was the daughter of a tailor. Even though his parents had not been really educated at the time‚ Ohm’s father was a very wise man who had educated himself and his son Georg. In my research I found out that he wrote an elementary grade geometry book while teaching mathematics at
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What factors affect the resistance of a piece of wire? What I am going to investigate is‚ what factors affect the resistance of a piece of wire. To start this experiment I will need the following equipments: Power pack Ammeter Voltmeter 1 meter ruler (100cm) 110cm of wire Crocodile clips This shows how the equipment will be set up. A V I will measure the Voltage and also Current of the wire. Once I have recorded the results
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ELECTRICITY HOTS Questions for Practice 1. Name a substance whose resistance almost remains unchanged by increase of temperature. 2. Name two special characteristics of heater coil. 3. A wire of resistance 4 ohms is bent to form a circle. What is the resistance between two diametrically opposite ends? 4. How does the resistance of a conductor change if its temperature is increased? 5. A current of 4A flows in a wire of resistance 60 ohms. Calculate electrical energy consumed in 2 minutes. 6. V-I graph
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