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n identical cells, cach of emf epsilon a...

n identical cells, cach of emf `epsilon` and internal resistance r, are joined in series to form a closed circuit. Once cell (A) is joined with reversed polarity. The potential difference across each cell, except A, is 

A

`(2epsilon)/(n)`

B

`(n-1)/(n)epsilon`

C

`(n-2)/(n)epsilon`

D

`(2n)/(n-2)epsilon`

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-CURRENT ELECTRICITY-EXERCISE - IA
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  2. n identical cells, each of emf epsilon and iternal resistance r, are j...

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  3. n identical cells, cach of emf epsilon and internal resistance r, are ...

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  4. A cell of emf E having an internal resistance r is connected to an ext...

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  5. Kirchhoff's law of junctions (first law), Kirchhoff's law of meshes (s...

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  6. In a balanced Wheatstone's network, the resistances in the arms Q and ...

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  7. If galvanometer and battery are interchanged in balanced Wheatstone br...

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  8. Wheatstone bridge can be used

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  9. In a Wheatstone's bridge three resistances P,Q,R connected in three ar...

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  10. Wheatstone bridge is most sensitive when the arms ratio is

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  11. In metre bridge experiment, the known and unknown resistances in the t...

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  12. In a metre bridge, metal wire is connected in the left gap, standard r...

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  13. Metal wire is connected in the left gap, semi conductor is connected i...

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  14. Metal wire is connected in the left gap, Germanium connected in the ri...

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  15. A series high resistance is preferable than shunt resistance in the ga...

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  16. The sensitivity of potentiometer wire can be increased by

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  17. A cell of emf 'E' and internal resistance r connected in the secondary...

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  18. Potentiometer is an ideal instrument, because

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  19. On increasing the resistance of the primary circuit of potentiometer, ...

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  20. If the value of potential gradient on potentiometer wire is decreased,...

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