Question

explain the dependence of resistance on temperature and material of the conductir.?​

Answer 1

resistance of a conductor increases with temperature

resistance is directly proportional to the length of the conductor and inversely to the cross sectional area of that conductor

Answer 2

the relation between the resistance and temperature is given by

R = r (1 + a∆T)

where a is the coefficient of the temperature

thus increasing temperature increases resistance in the conductor

now

also

R = p * l/A

where p is the resistivity of the material

thus changing l and A causes achangw in resistance