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Measurements & InstrumentationAC Bridges

In an AC bridge at balance, the detector current is ideally?

  • AZero
  • BMaximum
  • CEqual to supply current
  • DAlways 1 A
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Correct Answer: A. Zero
Explanation: At bridge balance the detector terminals are at equal potential, so ideally no detector current flows.
Reference: Standard measurements and instrumentation: ac bridges
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