Electrical Power & Heating Effect
A thermocouple is made from two metals, Antimony and Bismuth. If one junction of the couple is kept hot and the other is kept cold, then, an electric current will
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Answer: (d)
- In the Sb–Bi thermocouple the current flows from Bi to Sb at the hot junction.
- Around the loop it therefore flows from Sb to Bi at the cold junction (memory aid: ABC, Antimony to Bismuth at Cold).
- So the answer is (d).