ohm
"Ohm" is a scientific term with one main meaning — it is the standard unit used to measure electrical resistance. It was named after the German physicist Georg Simon Ohm, who studied how electricity flows through materials. You will mostly encounter this word in physics, electronics, and engineering.
When electricity travels through a wire or a component, some materials make it harder for the electricity to flow — this resistance is measured in ohms. Think of it like water flowing through a pipe: a narrow pipe resists the flow more than a wide one. The symbol for ohm is the Greek letter Ω (omega).
physics, electronics, engineering · Modern, widely used in science and technology
The technician used a multimeter to measure the resistance of the wire and found it was only 5 ohms.
In Ohm's Law, voltage equals current multiplied by resistance in ohms.