Current Electricity 4 Question 28

28. R1,R2,R3 are different values of R. A,B,C are the null points obtained corresponding to R1,R2 and R3 respectively. For which resistor, the value of X will be the most accurate and why?

(2005,2M)

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Solution:

  1. Slide wire bridge is most sensitive when the resistance of all the four arms of bridge is same.

Hence, B is the most accurate answer.



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