Why conductors offer resistance?

Yes , all conductors have some

amount of resistance although it

varies depending on the material

that is conducting the electricity .

Copper has a very low resistance,

and aluminum has a slightly

higher ( but still quite low )

resistance . This is why they are

used as electrical conductors.

Conductor resistance results in

voltage drop over the conductor

and power loss, manifested as

heating of the conductor .

Therefore , you want as low a

conductor loss as is reasonably

practical .

The reason of resistance is that,

no electron has a linear motion

when an electric field is applied to

it . e- move in random due to

apparent collision with other e -' s.

This motion is termed to as

Brownian motion . The random

movement however interrupts

with the electric field and creates

resistance sue to a negetive field

generated .