Antimony Bismuth Couple

What happens when current is passed in an antimony-bismuth couple?

  1. The junction becomes hot when current flows from antimony to bismuth
  2. The junction becomes hot when the current flows from bismuth to antimony
  3. Both junctions become hot
  4. Both junctions become cold

Answer: 2

Explanation: Based on the Peltier effect, the junction becomes hot when the current flows from bismuth to antimony.

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