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NEET2017PhysicsCurrent ElectricityActual

A meter bridge is set-up as shown, to determine an unknown resistance X using a standard 10 ohm resistor. The galvanometer shows null point when tapping-key is at 52 ~cm mark. The end-corrections are 1 ~cm and 2 ~cm respectively for the ends A and B . The determined value of X is

Options

  1. A10.2 ohm
  2. B10.6 ohm
  3. C10.8 ohm
  4. D11.1 ohm

Correct answer

B. 10.6 ohm

Step-by-step solution

Applying the condition of balanced Wheatstone bridge, we get aligned & X 10 = (52+1) cm (48+2) cm = 53 50 , & X=10 53 50 =10.6 aligned

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