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.
They are very host-specific and do not tend to leave their preferred animal. Lice spend their entire life cycle on the pet. Lice (singular: louse) are insects belonging to either the Mallophaga for chewing lice and Anoplura for sucking lice. There are about 460 species of sucking lice and 3,000 species of chewing lice. Transmission of lice is by direct contact with an infested pet.