Question

At room temperature (27c) the resistance of the heating element is 100ohm what is the temperature of the heating element

Answer 1

R1 = 100 Ω , R2 = 117 Ω

α = 1.70 × 10–4 °C–1

By formula ,
R2 = R1 [1 + α(t2 − t1 )]

R2 − R1 = R1 α(t2 − t1 )

117 − 100 = 100 x 1.70 × 10–4( t2 − 27 )

On Solving , t2 = 1027 °C