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Question: Answered & Verified by Expert


The magnitude of resistance X  in the circuit shown in the given figure, when no current flows through the   5 Ω  resistor is
PhysicsCurrent ElectricityNEET
Options:
  • A

      3  Ω

  • B

      6 Ω

  • C

      9 Ω

  • D

      12 Ω

Solution:
1263 Upvotes Verified Answer
The correct answer is:

  6 Ω

Since no current flows through the   5 Ω resistor, the circuit represents a balanced Wheatstone bridge. Therefore,

  X 18 = 2 6

  X= 2 6 ×18=6 Ω

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