Question

what are the factors on which resistance of a conductor depends and add
brief description for each factor?

Answer 1

resistance depend resistivity of conductor , length of conductors, and cross section area of conductor.
this is understand by below equation
R=rL/A
where R is resistance
r is resistivity L is length of conductor
and A is area of conductor

Answer 2

The resistance of a conductor depends upon the following factors :-
1) Length of the conductor
=========================================================
Resistance is directly proportional to length , so when the length of a wire is doubled resistance gets doubled and when the length of the wire gets halved, then resistance is halved.

=========================================================
2) Area of cross - section of the conductor
=========================================================
Area of cross- section means thickness of a conductor. The resistance of a conductor is inversely proportional to its area of cross-section. So, when area of cross-section is doubled , resistance is halved and when area of cross-section is halved , the resistance gets doubled.

=========================================================
3) Nature of the material of the conductor
=========================================================
Some materials have low resistance whereas some have high resistance.
For example, wire made of nichrome and copper. Wire made of nichrome has more resistance than that of copper.

=========================================================
4) Effect of temperature
==========================================================
Resistance of all pure metals increase if we increase the temperature and decreases if we lower the temperature.
But the resistance of alloys like manganin, nichrome , etc are unaffected by temperature