In an experiment with potentiometer, at the null postion

Options :
  1. current flows only in the potentiometer wire and the galvanometer circuit
  2. current flows in the potentiometer wire, but no current flows in the galvanometer circuit
  3. no current flows in hte potentiometer wir, but current flows in the galvanometer circuit
  4. neither current flows in the potentiometer wire nor current flows in the galvanometer circuit
Answer and Explanation :-

Answer: Option 2

Explanation:

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