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As is the cross sectional area and rho i...

As is the cross sectional area and `rho` is the specific resistance of a potentiometer wire. If I is the current passing through the potentiometer wire, then the potential gradient along the length of the wire is given by

A

` IA rho`

B

` IA//rho`

C

`I rho//A `

D

`rho//IA`

Text Solution

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The correct Answer is:
C
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MOTION-Electrical Instrument -EXERCISE -1
  1. If the current in a potentiometer increases, the position of the null ...

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

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

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  4. Potentiometer is an ideal instrument because

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  5. A potentiometer works on the principle that

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

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

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  8. In potentiometer the potential gradient is –

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

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  10. Discuss the principle of potentiometer and explain the determination o...

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  11. The material of wire of potentiometer is

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  12. If the current in the primary circuit of a potentiometer wire of speci...

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  13. The p.d. between A and B is balanced at 2.036 m length of the potentio...

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  14. In the following figure, the p.d. between the points M and N is balanc...

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  15. In the foregoing question, the balancing length between the p.d. betwe...

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  16. In a potentiometer of one meter length , an unknown emf voltage source...

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  17. The voltage across the two equal resistances connected in series get b...

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  18. The quantity that cannot be measured by a potentiometer is….

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  19. Correct diagram for the determination of internal resistance of a prim...

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  20. A potentiometer has uniform potential gradient across it. Two cells c...

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