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In given figure, the potentiometer wire ...

In given figure, the potentiometer wire AB has a resistance of `5 Omega` and length 10 m . The balancing length AM for the emf of 0.4 V is

A

2.52m

B

3.52m

C

1.52m

D

4.52m

Text Solution

Verified by Experts

The correct Answer is:
C
`I rho = ((E)/(R+r))(R)/(L)=((5)/(5+4.5))( 5)/(10)=0.2631 V//m`
`E_(1)=I rhol_(1)=(E_(1))/(Irho)=(0.4)/(0.2631)=1.52 m`
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NIKITA PUBLICATION-CURRENT ELECTRICITY-Multiple Choice Questions
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  4. The wire of potentiometer has resistance 4 Omega and length 1m. It i...

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  8. In a potentiometer experiment it is found that no current passes throu...

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  9. The potential gradient along the length of a uniform wire is 5 V/m. Th...

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  10. In figure AB is a potentiometer wire of length 10 m and resistance 1...

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  11. In figure, AB is a potentiometer wire, length 10 m and resistance 2 Om...

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  13. In the adjacent circuit the ammeter reads 5.0 A and voltmeter reads 20...

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  15. In a potentiometer experiment the balancing length is 8 m, when the tw...

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  16. Six cells each of e.m.f. 2 V and internal resistance 0.1Omega are conn...

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  17. Find the equivalent resistance of the network given in the figure,

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