# Resistance In A Wire Coursework Evaluation

Observe what happens to the steel wire after you connect the clip.Move the clip on the steel wire a little closer to the battery and watch what happens. )The thin steel wire is a good conductor of electricity, but not as good as the copper wire, which is deliberately chosen to have very low resistance.

Observe what happens to the steel wire after you connect the clip.Move the clip on the steel wire a little closer to the battery and watch what happens. )The thin steel wire is a good conductor of electricity, but not as good as the copper wire, which is deliberately chosen to have very low resistance.

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CROSS-REFERENCES Lessons In Electric Circuits, Volume 1, chapter 8: “DC Metering Circuits” LEARNING OBJECTIVES SCHEMATIC DIAGRAM ILLUSTRATION INSTRUCTIONS Although this experiment is best performed with two meters, and indeed is shown as such in the schematic diagram and illustration, one multimeter is sufficient.

Most ohmmeters operate on the principle of applying a small voltage across an unknown resistance (R) and inferring resistance from the amount of current drawn by it.

Being part of the measurement circuit, the test leads may contain more resistance than the resistance of the test specimen, incurring significant measurement error by their presence: One solution is called the Kelvin, or 4-wire, resistance measurement method.

It involves the use of an ammeter and voltmeter, determining specimen resistance by Ohm’s Law calculation.

The quotient will be equal to the specimen’s resistance in ohms.

The new HTML5 sims can run on i Pads and Chromebooks, as well as PC, Mac, and Linux systems.

Except in special cases such as the megger, both the voltage and current quantities employed by the meter are quite small.

This presents a problem for measurement of low resistances, as a low resistance specimen may be of much smaller resistance value than the meter circuitry itself.

i Pad: i OS 11 Safarii Pad compatible sims Android: Not officially supported.

If you are using the HTML5 sims on Android, we recommend using the latest version of Google Chrome.

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