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JEE Main Physics Class 12 Current Electricity Part 1 Questions

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Question : 31

Total: 100

In a meter bridge experiment resistances are connected as shown in the figure. Initially resistance P = 4 Ω 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 :

[Online April 9, 2017]

33
5
Ω
6Ω
7Ω
20
3
Ω

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