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Maxwell's inductance bridge compares an unknown inductance with

  • A.a standard variable inductance
  • B.a standard capacitance placed in the arm diagonally opposite to the unknown coil
  • C.a pure resistance
  • D.the mutual inductance between two coils wound upon a common former

Answer: A

The unknown coil with its resistance forms one arm and a calibrated variable inductor with a variable resistance forms another, the other two arms being resistances. Two adjustments then bring both parts of the balance condition to zero.

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