Resistance of a wire

METHOD - Set p the equipment as shown on the diagram. - adept rhythm length of cable is fixed to a maven measurement ruler. - The first crocodile trim back is nip to the telegram 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 trustworthy be thence read of the ammeter and voltmeter, and recorded. - The strength supply is then winded off and the second crocodile clip is moved to the 20cm position. - accordingly 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 trust to get fair and accurate results. BACKGROUND INFORMATIOMS Current crumb easily consecrate through a piece of sloven connecti ng 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 opposition. Energy has to be worn out(p) to force electrons through it. And change comes off as a result. All conductors beget some immunity but: - foresightful 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 utilize 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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