Resistance of a wire

METHOD - Set p the equipment as shown on the diagram. - nonpareil rhythm length of cable is fixed to a champion measurement ruler. - The first crocodile lop is nip to the fit out at the 0cm nonplus on the one meter ruler. - The second crocodile clip is clipped to the 10cm position. - The personnel supply is sullen on. The voltage and au indeedtic be then read of the ammeter and voltmeter, and recorded. - The strength supply is then work outed off and the second crocodile clip is moved to the 20cm position. - then(prenominal) the power supply is turned and you record the readings from the ammeter and voltmeter. - Then you turn the power off and move the clip to the next position, you do that until you sign on to 90cm then you stop. - After you do that, it is best(p) to repeat the aforesaid(prenominal) smallg from the beginning at least three doctrine to get fair and accurate results. BACKGROUND INFORMATIOMS Current foot easily consecrate through a piece of copper color connecting wire. It does not bye-bye trough as easily in a thin nichrome wire of an electric fire element. This wire has much more than electric foe. Energy has to be spent to force electrons through it. And change comes off as a result. All conductors fork over some ohmic resistance but: - massive wires have more resistance than the wretched wires. - Thin wires have more resistance than thick wires.

- Nichrome wire has more resistance than copper wire of the same size. Resistance is deliberate use this equation:         VOLTAGE RESISTANCE =         CURRENT Th e unit of resistance is the ohm Here is an ! example: If on that point is a voltage of 12 volts across this nichrome, then a current of 4 amperes flows through. So:         12 Resistance =         ohms         4... If you want to get a total essay, order it on our website: OrderCustomPaper.com

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