Physics Coursework- Ohms Law Aim: To investigate the factors of affecting the rampart of a fit. In this experiment I will be victimization a metal nichrome equip to show the enemy when the length and width is changed. Variables Variables that I am waiver to make the same. Variables that I am discharge to change. Width- 0.36mm2 Material- Nichrome fit Voltage- 2V Temperature- means Temperature         Length- 10cm, 20 cm, 30cm, 40cm, 50cm Material- Nichrome Length- 50cm Voltage- 2V Temperature- Room Temperature         Width- 0.36mm2, 0.32mm2, 0.24mm2, 0.16mm2, 0.12mm2, 0.08mm2 In this experiment I am going to use the nichrome fit out as a theater director and I will be measuring the resistance by using an ammeter and a voltmeter because electricity tummy pass done the nichrome wire and the voltmeter will bewilder me the volts produced and the ammeter will enforce me the amps produce, thereof these readings can be used to fin d the resistance. The resistance of a conductor is defined by the equation: R=V I Resistance = Potential disparity (Voltage)(V) Current (amps) indeed I will be using this formula to give me the resistance, where the voltage divided by the current will grant upon the resistance.
Metals conduct electricity because the atoms in them do not postponement on to their electrons very well, and so creating free electrons, carrying a charged charge to jump along the line of atoms in a wire. Resistance is caused when these electrons flowing towards the positive terminal have to jumps atoms. So if we double t he length of a wire, the number of atoms in ! the wire doubles, so the number of jumps double, so twice the amount of cypher is required: There are twice as some(prenominal) jumps if the wire is twice as long. The thinner the wire is the slight transmit of... If you want to get a full essay, value it on our website:
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