Question

what is resistance resistivity conductance conductivity

Answer 1

Resistance can be thought as an obstacle to current flow .

Resistivity is constant for a material at constant temperature.
$r = \beta l \div a$
where r is resistance ,Beta is Resistivity and a is cross sectional area.

Rearranging,We get

$\beta = ra \div l$
Hence resistivity can be defined as resistance to current flow through the conductor of unit cross sectional area through unit length of the conductor

Answer 2

$\huge\fbox\pink{♡Answer}$

Electrical resistivity (also called specific electrical resistance or volume resistivity) and its inverse, electrical conductivity, is a fundamental property of a material that quantifies how strongly it resists or conducts electric current.