What is an Ohm?

Ohm (Ω) is the SI unit of electrical resistance, named after Georg Ohm, a German physicist. An ohm is defined as the resistance between two points of a conductive medium when 1V (Volt), applied to these points, produces a current of 1A (Ampere). Electrical resistance is measured in SI units and can range from microohm to teraohm, being able to calculate these values in terms of Ohms is key to any electrical equation including resistance calculations.

These values are displayed as:

µΩMicroohmOne microohm is equal to 1/1,000,000 (10-6) of an ohm
MilliohmOne milliohm is equal to 1/1,000 (10-3) of an ohm
ΩOhmOne ohm is the baseline for all other SI unit conversions
KiloohmOne kiloohm is equal to 1,000 (103) ohms
MegaohmOne megaohm is equal to 1,000,000 (106) ohms
GigaohmOne gigaohm is equal to 1,000,000,000 (109) ohms
TeraohmOne Teraohm is equal to 1,000,000,000,000 (1012) ohms