RVFM-Resistance-Coils-RVFM-PH1143C-The-RVFM-Resistance-Coil-5-Ohm-is-a-resistance-unit-to-add-to-any-circuit-for-basic-electrical-experiments-Instead-of-using-simple-resistances-these-blocks-provide-convenient-connections-to-a-resistance-by-means-of-4-mm-sockets-RVFM-Resistance-Coil-5-Ohm