- When The Ambient Temperature Of This Circuit Was 0 C The Respective Resistance Values Were R1 1 R2 1 R3 5 And R4 5 1 (85.89 KiB) Viewed 18 times
When the ambient temperature of this circuit was 0°C, the respective resistance values were R1=1, R2=1, R3=5, and R4=5. (1) When the circuit is locally heated and the temperature of only R1 (that is made of platinum) is varied by AT, a voltage Vab was generated at both ends of R5. If the electromotive force of the circuit E=5[V], show Vab using AT. R3 = 5 [ker Ri=1 [ksh] w w Rs 5 M Rq = 5 [ka] w R2 = 1 [ks] E The temperature coefficient of platinum is constant (a=3.9x10-3[/°C) regardless of temperature. hint : AR = a ROOT, R = Roll+oT) (2) it the AT = 20 °C, find the value of Vab: =