JEE MainPhysicsCurrent ElectricityMCQ+4 / −1
In a meter bridge experiment resistances are connected as shown in the figure. Initially resistance P = 4 and the neutral point N is at 60 cm from A. Now an unknown resistance R is connected in series to P and the new position of the neutral point is at 80 cm from A. The value of unknown resistance R is : 
- A
- B6
- C7
- D
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