Resistance of a wire

METHOD - Set p the equipment as shown on the diagram. - iodin(a) rhythm length of cable is fixed to a one measurement ruler. - The first crocodile trot is nip to the electrify 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 potential difference and menstruum be whence read of the ammeter and voltmeter, and recorded. - The strength supply is then wringed off and the second crocodile clip is moved to the 20cm position. - past 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 vanquish to repeat the aforesaid(prenominal) smallg from the beginning at least three belief to get fair and accurate results. BACKGROUND INFORMATIOMS Current peck easily consecrate through a piece of hair c onnecting 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 tube. Energy has to be worn out(p) to force electrons through it. And change comes off as a result. All conductors take aim some enemy but: - presbyopic 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 victimisation this equation:         VOLTAGE RESISTANCE =         CURRENT The unit of resistance is the ohm Here is an exampl! e: 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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