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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Theory behind my experiment Thickness (cross sectional area of the wire)‚ length‚ and temperature all have some effect on the amount of resistance created in a wire. Another factor is the conductivity of the material we are using. Some metals are just more electrically conductive than others. As long as I use the same type of metal for each wire‚ my experiment will remain fair. Cross Sectional Area The thicker the wire‚ the less resistant it is. This is because there are more electrons in
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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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Simon Ohm was born on March 16th‚ 1789. He died on July 6th‚ 1854. He was a German physicist. As a high school teacher‚ Ohm began his research with the recently invented electrochemical cell [ (Unknown.) ] Using his own equipment‚ Ohm determined that there is a connection between the electrical forces (voltage) applied across a conductor and the resultant electric current. This known as Ohm’s law‚ which is named after him. Ohm was born in Erlangen‚ Bavaria. His parents were Johann Wolfgang Ohm and
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LAB 01 Measurement of Resistance and Ohm’s Law Section : 04 Instructor’s Name : BERNA DÜNDAR Experiment Date : 26/02/2014 Submission Date : 05/03/2014 Measurement of Resistance and Ohm’s Law Department of Physics‚Işık University Meşrutiyet Köyü‚Üniversite Sokağı‚No:2 34980 Şile‚İstanbul Abstract In this experiment we used two multimeters‚ a set of resistors‚ a bundle of connecting wires and a DC power supply. By this
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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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Peaceful resistance to laws positively impacts a free society. In our world‚ civil disobedience is important in showing mass beliefs of all people. If any person doesn’t agree with a law‚ they should have the right to peacefully resist the law as long as they accept the consequences. Resistance that is not peaceful is the problem in today’s society and causes tension between people and the law. For example‚ Rosa Parks is a name that is important in history and will never be forgotten. “You must never
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Peaceful resistance to laws doesn’t have to have either a positive or negative impact on a free society. To me a free society is about society expressing themselves without being judged by what they might think. For example‚ In the Constitution (under the Bill of Rights)‚ the First Amendment says " Congress shall make no law respecting an establishment of religion or prohibiting the free exercise thereof‚ or abridging the freedom of speech or of the press‚ or the right of the people peaceably to
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An experiment to investigate the factors which affect Resistance in a wire What is resistance? A potential difference (V) applied across a wire of length (l)‚ there is in the conductor‚ an electric field (E). In this electric field the free electrons are not however under continuous acceleration (Ee/m). This is because they repeatedly collide with the moderately massive vibrating atoms losing their kinetic energy. The vibrating atoms having gained this kinetic energy now vibrate more. The resulting
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Film: The wire (TV series 2002-2008) The series features the abuse of narcotics from a law enforcer’s‚ abuser’s and a drug dealer’s perspective. Rational choice theory This theory settles on a practical belief that man is an actor who reasons contemplates on benefits‚ means‚ costs and ends then makes a rational choice. Man has a sense comprehensible rationale of free will‚ where he evaluates the risks and benefits for committing a crime. From the excerpts from the film (season1)‚ we see a night
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