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NEET2003PhysicsCurrent ElectricityActual

In a Wheatstone's bridge all the four arms have equal resistance R . If the resistance of the galvanometer arm is also R , the equivalent resistance of the combination as seen by the battery is:

Options

  1. AR 4
  2. BR 2
  3. CR
  4. D2 R

Correct answer

C. R

Step-by-step solution

Resistance seen by the battery = Equivalent resistance between A and B is R .

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