The subsequent problems deal with the figure and table below
For a Type J (Iron-Constantan) thermocouple configuration (as shown above) with a 0°C reference (Tref):
where Vemf is the voltage difference produced by the junction pair (Vemf = VA ? VB in the figure).Assume that nodes A and B are at the same temperature, unless indicated otherwise. Assume that the op amp is ideal.If node A is heated and node B is cooled (and the temperature of everything else in the circuit remains unchanged), and the op amp circuit uses
copper conductors, what is the effect on Vout?
A. no effect
B. it changes
Answer: B
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