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.
4. singular noun. If something is a reflection or a sad reflection on a person or thing, it gives a bad impression of them. Infection with head lice is no reflection on personal hygiene. The library is unique and its break-up would be a sad reflection on the value we place on our heritage.