Two resistors R1 and R2 are at temperatures T1 and T2 respec

Two resistors R_1 and R_2 are at temperatures T_1 and T_2, respectively, are connected in series. Find a single resistor and the appropriate temperature that are equivalent to the series combination.

Solution

if resitance are in Series then equallent resitance is R=R1+R2

the equallent Temprature is T=T1+T2

since the relation between temp coefficint and restance is R=Rref(1+k(T-Tref))

from this the temprature is directly proptional with Resitnace

so when two resitior get added, temp also get added