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.
Head lice (pediculus humanus capitis) are small, grayish-brown, wingless insects that are roughly the size of a sesame seed (found on a burger bun) when fully grown. They need to live in warm (31C +) humid conditions and feed off human blood obtained by biting the scalp.