The ratio of the resistance of conductor at temperature 15^ C to its resistance at temperature 37.5^ C is 4: 5 . The temperature coefficient of resistance the conductor is

Step-by-step solution

The resistance at temperature t is aligned & R_t=R₀(1+ t) & R_t^ =R₀ (1+ t^ ) aligned 4=1+15 .....(i)5=1+37.5 .....(ii) 4 5 = 1+15 1+37.5 4(1+37.5 )=5(1+15 ) 75 =1 = 1 75 ^ C ⁻¹