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Resistance Coils Mounted


A quality unit for your experiments, coiled around a divided wooden spool are 4 lengths of copper wire (22 gauge, 10m long; 22 gauge, 20m long; 28 gauge, 10m long and 28 gauge, 20m long) and 1 length of copper-nickel wire (22 gauge, 10m long). The spool is mounted on a lightweight base with 6 binding posts. Labels indicate each wire’s type, length and gauge. To measure resistance, connect the mounted coils to your Wheatstone bridge, digital ohmmeter or multimeter that measures ohms. Computations are simplified thanks to the coils’ 2:1 length ratios.

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