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All that is needed for this experiment is a multimeter, ruler, micrometer and some samples of nichrome wire. If doing the variation of area experiment each student will need at least 5 different gauges of wire. (You can get these cheaply on eBay). If you are not careful this will end with a big tangle of wire so it is best to prepare cards of the different gauge wire beforehand, then the cards can be re-used.The R vs...

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