The material from which the conductor is made, the length of the conductor, the diameter of the conductor and the temperature of the conductor are all things that impact its resistance.
In an electrical circuit ,, resistance is the force that resists the flow of electricity thru the circuit .. this is used in light bulbs to create the heat and light that we expect from the bulb .....
Yes, resistance is directly proportional to the length, and inversely proportional to the cross sectional area. R = p*l/A. Where R is the resistance of the piece of conducting material, p is Greek...