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A potential gradient is created in the w...

A potential gradient is created in the wire by a standard cell for the comparision of emf's of two cells in a potentiometer experiment. Which possibility of the following will cause failure of the experiment.

A

the emf of the standard cell is higher than that of the other cells.

B

the diameter of the wires is equal and similar,

C

the number of wires is ten.

D

the emf of the standrad cell is less than those of both the cells.

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ALLEN -CURRENT ELECTRICITY-EX.II
  1. In the following circuit diagram the value of resistance X for the pot...

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  2. The sensitivity of a potentiometer is increased by

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  3. A potential gradient is created in the wire by a standard cell for the...

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  4. A voltmeter having a resistance of 998 ohms is connected to a cell of ...

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  5. Find the potential difference between X and Y in volt is:-

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  6. A cell of e.m.f. 2V and negligible internal resistance is connected to...

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  7. Potentiometer wire length is 10m, having a total resistance of 10Omega...

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  8. P,Q is a uniform wire of resistance 2000Omega and m the md point PQ. A...

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  9. A student connects a voltmeters, ammeter and resistance according to t...

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  10. A potentiometer wire has length 4 m and resistance 8Omega. The resista...

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  11. If V(AB) = 4V in the given fig are, then resistance chi will be

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  12. For the network of resistance shown in the figure the equivalent resis...

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  13. When a potential difference is applied across the ends of a linear met...

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  14. A current of two amperes is flowing through a cell of e.m.f. 5 volts ...

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  15. 100 cells each of emf 5V and internal resistance 1 Omega are to be arr...

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  16. Two resistance R(1) and R(2) are made of different material. The tempe...

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  17. In the arrangement of resistances shown below, the effective resistanc...

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  18. A potentiometer wire of length 1000 cm has a resistance of 10 ohms. It...

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  19. Electromotive force of a cell is basically a

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  20. A battery of e.m.f. 10 V and internal resistance 0.5 ohm is connected ...

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