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A galvanometer has a resistance of G ohm...

A galvanometer has a resistance of G ohm and range of V volt. Calculate the resistance to be used in seres with it to extend its range its renge to nV volt.

A

`(n-1)G`

B

`G//n`

C

`nG `

D

`G//(n-1) `

Text Solution

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The correct Answer is:
A
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MOTION-Electrical Instrument -EXERCISE -1
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  5. When the current flowing in a galvanometer is (1/n) of the total curre...

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  6. A galvanometer can be converted into a voltmeter by connecting a

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  7. In every experiment with potentiometer in the null point state, the po...

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  8. The specific resistance per unit area of cross section of a wire is eq...

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  9. If the length of the potentiometer wire is doubled, the sensitivity fo...

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  10. The potential gradient of the potentiometer wire depends on

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  11. The potentiometer wire is replaced by another wire whose length thickn...

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  12. If the current in a potentiometer increases, the position of the null ...

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  13. The length of a potentiometer wire is 10m and a potential difference o...

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  14. As is the cross sectional area and rho is the specific resistance of a...

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  15. Potentiometer is an ideal instrument because

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  16. A potentiometer works on the principle that

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  17. If the length of potentiometer wire is increased, then the accuracy in...

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  18. In an ammeter calibration experiment, the potentiometer is used to mea...

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  19. In potentiometer the potential gradient is –

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  20. If the potentiometer wire having resistance rho ohm/ m and I amp. curr...

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