Physics GCSE coursework: Resistance of wire Aim: To investigate if the length of wire affects its resistance. Prediction (Hypothesis): I predict that the longer the wire the higher the resistance‚ and the shorter the wire the lower the resistance. Knowledge: Resistance is that property of electric components that turn electric energy into heat in opposing the passing of an electric current.It can be beneficial‚ as in electric heaters‚ or a pest‚ as in light bulbs‚ where the heat
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colorado.edu/simulations/sims.php?sim=Ohms_Law and click on Run Now. Wire Resistance and Ohm’s Law Procedure Part I Wire Resistance: open the PhET Simulation Electricity‚ Magnets‚ and Circuits Resistance in a Wire. As wire length (cm) increases‚ the resistance (Ω) _increases________________ As wire area (cm2) increases‚ the resistance (Ω) _____decreases_____________ As wire resistivity (Ωcm) increases‚ the resistance (Ω) ____increases___________ Procedure Part II: Ohm’s Law: Electricity
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Investigating the resistance of a wire. Planning For this investigation there are a number of variables that can be chosen to change or keep the same‚ these are: · Length of the wire. · Diameter of the wire. · Type of the wire. · Temperature of the wire. Scientific explanation. All electrical conductors resist current through them to some extent. This is resistance and this affects the size of the current flow. The main dependence of resistance are: § It’s Length. § It’s Thickness
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How does the length of a wire affect its resistance? Introduction: This first report in Physics will show the investigation of how the length of a wire affects its resistance. For starters I will go through the main definitions‚ to get a better knowledge of what is going to happen. However I will plan it out first to show each step of how I started‚ and then go into detail about the results and what the investigation on a whole has showed me. I shall then conclude my findings and present them with
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Criminological Theory and The Wire Rachel Bohnenberger Professor Kozey JLC 205-001 13 April 2015 Crime has existed for as long as human beings have been able to differentiate between actions that are good and actions that are bad. Whether or not an action that is considered bad is a crime is determined by laws set forth by local‚ state‚ or federal governments and the severity of the crime is determined by those whose job it is to interpret the laws‚ such as a police officer or a judge.
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not often seen on a drawing of magnetic field lines. Electromagnets A magnetic field exists around all wires carrying a current. When there is no current the compass needles in the diagram shown line up with the Earth’s magnetic field. A current through the wire produces a circular magnetic field. See what happens when there is a current in the wire. The magnetic field for a coil of wire is shown below. The magnetic fields from each of the turns in the coil add together‚ so the total magnetic
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meters of varnish insulated copper wire with diameter 0.5mm PVC pipe- 300mm length 3- 1.5 volt batteries with casing 3- jumper wires with crocodile clips Multimeter Scissors Infrared Thermometer 1 roll of insulation tape Procedure 1. Wind the wire around the PVC pipe. Fix the ends of the wires to the insulation tape. Remove about 3 cm. of insulation from the wire using the tips of the paper knife. Measure the resistance of the wire using the ohm setting on the multimeter
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OBJECTIVE For this piece of coursework I have been asked to investigate into the resistance of wires when the length is changed. INTRODUCTION The objective for my coursework (as already stated above) is to investigate how changing the length of wire can affect the resistance. There are factors which can affect how accurate our expriment is come on four levels. As in any scientific experiment‚ there are always variables ( "likely to change or vary subject to variation; changeable." ) which can
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The factors that affect the motion of a falling object Scientific Knowledge When an object falls‚ many forces are acted upon it: gravity‚ friction‚ air resistance and‚ if in the water‚ up thrust. When an object starts to fall‚ gravity over powers air resistance‚ however‚ as an object starts to reach terminal velocity (its maximum speed) the opposite forces start to even out until they are equal. Some people believe that if the forces are balanced then the object has stopped moving‚ meanwhile they
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current when the length of wire changes‚ so I then can work out the resistance. I will be using constantan wire starting of with 1m length and then decreasing it by 0.10m intervals down to 0.20m long. I will not go above 1m or below 0.20m because it may be too long that they resist so much current that the wire burns‚ or the length of the wire is so small that it doesn’t resist any current at all. The length of the wire will be changed by moving the crocodile clip across the wire on a ruler. The independent
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