NEET Physics Current Electricity Questions Solved

In Wheatstone's bridge P = 9ohm, Q = 11ohm, R = 4ohm and S = 6ohm. How much resistance must be put in parallel to the resistance S to balance the bridge 

(1) 24 ohm

(2) 449ohm

(3) 26.4 ohm

(4) 18.7 ohm

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