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ECAT Physics QUESTION #757
Question 1
A small parallel resistance (shunt) used to convert a galvanometer into an ammeter is given by:
  • Rs = (Ig/(I-Ig)) x Rg✔️
  • Rs = (Ig-I)/Ig
  • Rs = Ig/(I-Iθ)
  • None
Correct Answer Explanation
The shunt resistance Rs = IgRg/(I-Ig). This ensures most current bypasses the galvanometer making it function as an ammeter.