Eisco Labs Resistance Unit Kit 10 - 200 Ohms Set of 10 This resistance investigation kit comes with 10 resistors in total: Two (2) each of 10 20 50 100 and 200 Ohm resistors. Each resistance unit is encased in an easy to use plastic enclosure. This kit of resistance units is useful for physics classroom demonstrations or experiments in electricity and electronics laboratories. Can be used to demonstrate or investigate: resistors in series resistors in parallel voltage dividers and Kirchhoff s laws along with many other standard activities. Connect to other resistance units or circuit elements via connecting leads (not included). Can be used with both 4mm stackable plug leads or as an ordinary screw terminal (spade type). Vmax:3.0 V Imax:0.3 A. Overall dimensions of each resistance unit: 5 x 5 x 4 cm.