Resistance Substitution Box Biology_Health & Genetics bare copper

bare copper

Spring-loaded 4mm slit on a rod attachment opens and closes smoothly under finger pressure

supplying the standard mid-range value used in the bulk of introductory Ohm's-law and voltage-divider investigations

this Hall's car supports dynamics work on inclined planes with weights and pulleys

supplied dry so the user adds acid and charges it before running heavy-current electrolysis loads

Resistance Substitution Box Biology_Health & Genetics bare copperTwelve position substitution box rotating through 100 ohms to 470k ohms at 1W and plus or minus 1%, dropping a known resistance into a circuit without rewiring during Ohm's law work.