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Measurements & InstrumentationDC Bridges

A Wheatstone bridge has P=100 ohm, Q=200 ohm and R=150 ohm. For balance, S must be?

  • A75 ohm
  • B150 ohm
  • C300 ohm
  • D450 ohm
Report an error
Correct Answer: C. 300 ohm
Explanation: At balance P/Q=R/S. Thus 100/200=150/S, giving S=300 ohm.
Reference: Standard measurements and instrumentation: dc bridges
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