NEET Physics Current Electricity Questions Solved

(a) Use Kirchhoff's rules to obtain the balance condition in terms of the values of the four resistors in a

     Wheatstone bridge so as to obtain null deflection in the galvanometer.

(b) Explain how the balance condition in Wheatstone bridge is used in meter bridge to determine the

      value of unknown resistance. Under what condition is the error in determining the unknown

      resistance minimized ?                                    ( 5 marks) 

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