[h3]Factors affecting resistance[/h3]
[li]As the length of the wire increases; the resistance increases; the current (amps) decreases[/li]
[li]As cross-sectional area increases (of a component); the resistance decreases; the current increases[/li]
[li]Metals tend to be good conductors because, they have more free moving electors (delocalised electrons), due to metallic bonding.[/li]
[li]As temperature increases; the resistance increases; the current (amps) decreases
[h3]Resistance in series circuits[/h3]
Rs = Resistance in series
The other 2 variables are just the resistances.
So the resistance in a series circuit adds up.