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JEE Main Physics Class 12 Current Electricity Part 1 Questions

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Question : 14

Total: 100

In the experimental set up of metre bridge shown in the figure, the null point is obtaine data distance of 40 cm from A. If a 10 W resistor is connected in series with R1 , the null point shifts by 10 cm. The resistance that should be connected in parallel with (R1+10)Ω such that the null point shifts back to its initial position is :

[11 Jan. 2019 II]

20 Ω
40 Ω
60 Ω
30 Ω

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