Resistance Coils, Shows how resistance varies with the type of wire, length of wire, and diameter of wire in coil in 0.1 to 0.9 ohms, Each

Details

This high-quality unit is perfect for your experiments, featuring four lengths of copper wire (22 gauge, 10m long; 22 gauge, 20m long; 28 gauge, 10m long; and 28 gauge, 20m long) and one length of copper-nickel wire (22 gauge, 10m long), all coiled around a divided wooden spool. The spool is mounted on a lightweight base with six binding posts, and labels clearly indicate each wire's type, length, and gauge. To measure resistance, simply connect the mounted coils to your Wheatstone bridge, digital ohmmeter, or multimeter that measures ohms. The 2:1 length ratios of the coils simplify computations.