What's drude and Lorenz theory?​

When an electric field is established across the metallic solid, the free electrons are accelerated. ... Thus, an electron acquires additional non-random velocity opposite to direction of field. This velocity is responsible for transport of electrons in conductors.

Explanation:

the answer is a)

mark brainliest

r = ρ x length / area  

ρ = r x area / length  

ρ is in ohm-meters  

in basic units, it is m³kg/s³a²  

i think this is it.