Question

(b) The resistance of a coil of wire increases from 40 at 10 °C
to 48.25 2 at 60 °C. Find the temperature coefficient at
0 °C.​

Answer 1

Answer:

Rt = Ro (1+ alpha ∆T)

40 = Ro ( 1+ alpha 10)

48.25 = Ro ( 1+ alpha 60)