Ohmmeters work by passing a small current through the component and measuring the voltage produced. If you try this with the component connected into a circuit with a power supply, the most likely result is that the meter will be damaged. Most multimeters have a fuse to help protect against misuse.
Lice itself is a Plural form and the the Singular of it is Louse. Louse ( Insect ) Louse is the common name for members of the order Phthiraptera, which contains nearly 5,000 species of wingless insect. : Wikipedia.
A few nouns form their plural by a change in spelling: child-children mouse-mice tooth-teeth ox-oxen louse-lice goose-geese woman-women freshman-freshmen foot-feet However, in a very few words ending in man, the plural is formed by adding s: German-Germans ottoman-ottomans 6.