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A resistance of 2Omega is connected acro...

A resistance of `2Omega` is connected across one gap of a meter bridge (the length of the wire is `100 cm`) and an unknown resistance, greater than `2Omega`is conneted across the other gap. When these resistances are interchanged, the balance point shifts by `20 cm`. Neglecting any corrections,the unknown resistance is

A

`3 Omega`

B

`4 Omega`

C

`5 Omega`

D

`6 Omega`

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The correct Answer is:
A
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RESONANCE ENGLISH-CURRENT ELECTRICITY-Exrcies-3(PART-1)
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  15. During an experiment with a metre bridge, the galvanometer shows a nul...

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  16. In an aluminum (Al) bar of square cross section, a square hole is dril...

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  17. In the following circuit, the current through the resistance R=(2Omega...

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  19. Consider two identical galvanometers and two identical resistors with ...

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