**Description** : Video to discover the influence of resistance on a circuit, draw the current-voltage characteristic curve of an ohmic conductor and give the equation which will be the relation: ** V = RI**, known as

**Definitions**

__Ohmic conductor__: any two-terminal device, or more generally any conductor, of which the voltage/current characteristic is a straight line passing through the origin.

__Characteristic curve__: A current–voltage characteristic or **I–V curve** is a relationship, represented as a chart or graph, between the electric **current** through a device and the corresponding **voltage** (potential difference) across it.

flash animations: rheostat characteristic-ohm effect 47 Ω 100 Ω 470 Ω 1000 Ω