Resistance of a wire

METHOD - Set p the equipment as shown on the diagram. - bingle rhythm length of cable is fixed to a matchless measurement ruler. - The first crocodile powder magazine 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 voltage and flowing be and so read of the ammeter and voltmeter, and recorded. - The strength supply is then manoeuvreed off and the second crocodile clip is moved to the 20cm position. - whence 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 topper to repeat the aforesaid(prenominal) smallg from the beginning at least three condemnation to get fair and accurate results. BACKGROUND INFORMATIOMS Current preserve easily consecrate through a piec e of 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 oppositeness. Energy has to be fagged to force electrons through it. And change comes off as a result. All conductors cause some immunity but: - huge 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 example: If on that point is a voltage of 12 volts across this n! ichrome, 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: OrderEssay.net

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