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For changing the range of a galvanometer...

For changing the range of a galvanometer with G ohm resistance fromV volt nV, what will be the value of resistance connected in sereis to it:-

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Verified by Experts

The correct Answer is:
`((a)/(3),(a)/(3))`

`x_(cm) = ((M xx (a)/(2)) + (M xx 0) + (M xx (a)/(2)))/(M + M + M) = (a)/(3)`
`y_(cm) = ((M xx 0) + (M xx (a)/(2)) + (M xx (a)/(2)))/(M + M + M) = (a)/(3)`
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ALLEN -CURRENT ELECTRICITY-EXERCISE-IV A
  1. Assertion : Current versus potential difference (i-V) graph for a cond...

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  2. A galvanometer of resistance 100Omega gives full scale deflection for ...

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  3. For changing the range of a galvanometer with G ohm resistance fromV v...

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  4. The specific resistance of a conductor increases with:

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  5. For a cell terminal potential difference is 2.2 V when circuit is open...

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  6. N identical cells whether joined together in series or in parallel, gi...

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  7. The potential difference between the points A and B in the following c...

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  8. Length of a potentiometer wire is kept long and uniform to ahcieve:-

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  9. A body is projected up such that its position vector varies with time ...

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  10. Find the equivalent resistance across AB :

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  11. There are three voltmeters of the same range but of resistance 10000 O...

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  12. In the circuit element given here, if the potential at point B = V(B) ...

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  13. A copper wire has a square cross-section, 2.0 mm on a side. It carr...

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  14. The emf of a battery is 2V and its internal resistance is 0.5Omega the...

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  15. The potential difference across the 100 Omega resistance in the follow...

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  16. The equivalent resistance between the point P and Q in the network giv...

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  17. When connected across the terminals of a cell, a voltmeter measures 5 ...

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  18. Thirteen resistances each of resistance R ohm are connected in the cir...

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  19. A group of N cells whose emf varies directly with the internal resista...

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  20. A galvanometer has resistance 36Omega if a shunt of 4Omega is added wi...

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