On what factors does the resistance of a conductor depends?
The resistance of a conductor first depends on the material from which it is made. The resistance is nothing but opposition in the path of the free electrons of a conductor. This opposition in conductor varies from material to material. Then there are others that contribute to the resistance of a conductor. They are :
Temperature: The temperature is a vital factor in determining the resistance of a conductor. More the temperature, more the movement of free particle resulting in more collisions. Thus with the temperature increase, resistance also increases due to the increased number of collisions.
Area of cross-section and length: More the area of cross-section, the resistance is less. That is the area of a section is inversely proportional to resistance. On the other hand, resistance is directly proportional to the length of the conductor. The more the length, more is the resistance.