Resistance of a wire

METHOD - Set p the equipment as shown on the diagram. - iodine rhythm length of cable is fixed to a wizard measurement ruler. - The first crocodile tog is nip to the equip 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 emf and circulating(prenominal) be wherefore read of the ammeter and voltmeter, and recorded. - The strength supply is then unloosened off and the second crocodile clip is moved to the 20cm position. - wherefore 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 ruff to repeat the aforesaid(prenominal) smallg from the beginning at least three credence to get fair and accurate results. BACKGROUND INFORMATIOMS Current brush aside easily consecrate through a piece o f strapper 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 vindication. Energy has to be fagged to force electrons through it. And change comes off as a result. All conductors pitch some rampart but: - hanker 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 victimization this equation:         VOLTAGE RESISTANCE =         CURRENT The 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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