Ohm

The ohm ($\Omega$) is defined as:

$1\text{ }\Omega = \frac{1\text{ V}}{1\text{ A}}$

Common multiples: 1 k$\Omega$ = 1000 $\Omega$; 1 M$\Omega$ = $10^6$ $\Omega$.

Typical resistances: copper wire $\approx 0.01$ $\Omega$; light bulb $\approx 500$ $\Omega$; human body (dry skin) $\approx 100$ k$\Omega$.