Answer to Question #65351 in Electric Circuits for Helen

Question

You were given a pendant on Valentine’s Day, and you wonder whether it is worth
anything more than emotional value. You attach it to a 1.50 V battery along with an
ammeter in series so that you can measure the current through the pendant, which
turns out to be a whopping 4.72×105 A. Based on the pendant being 2.00 cm long and
having an assumed cross section of 1.00 cm2
, determine the resistivity of the pendant. Determine what substance the pendant is made from, assuming was done at a temperature of 20.0 degrees Celsius.