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The balancing lengths for the cells of ...

The balancing lengths for the cells of e.m.f. `E_(1)` and `E_(2)` are `l_(1)` and `l_(2)` respectively. If they are connected separately then

A

`(E_(1))/(E_(2))=(l_(1))/(l_(2))`

B

`(E_(1))/(E_(2))=(l_(1)+l_(2))/(l_(1)-l_(2))`

C

`(E_(1))/(E_(2))=(l_(1)+l_(2))/(l_(2))`

D

`(E_(1))/(E_(2))=(l_(1)-l_(2))/(l_(2))`

Text Solution

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The correct Answer is:
A
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NIKITA PUBLICATION-CURRENT ELECTRICITY-Multiple Choice Questions
  1. A potentiometer is an ideal device of measuring potential difference b...

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  2. The e.m.f. of two cells can be compared by

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  3. The balancing lengths for the cells of e.m.f. E(1) and E(2) are l(1)...

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  4. The equation, ( E(1))/(E(2))= (l(1)+l(2))/(l(1)-l(2)), is used to com...

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  5. The internal resistance of the cell can be determined by,

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  6. The unit of potential gradient is

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  7. In comparing e.m.f. of two cells by a potentiometer balance point is o...

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  8. The sensitivity of the potentiometer can be increased by

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  9. Which of the following can cause the null point of a potentiometer to ...

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  10. When null point is obtained in the potentiometer the current is draw...

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  11. Potentiometer was first invented by

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  12. In the construction of potentiometer, the length of wire used is

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  13. A potentiometer is more sensitive when

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  14. Instead of voltmeter, potentiometer is always used to measure e.m.f. ...

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  15. The potentiometer wire of resistance R is connected in series with a c...

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  16. Potentiometer is used to

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  17. The internal resistance of a cell by potentiometer is given by

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  18. In potentiometer experiment to determine internal resistance of the ce...

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  19. The current, in a potentiometer wire of 100 cm length, is adjusted to ...

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  20. In given figure, the potentiometer wire AB has a resistance of 5 Omeg...

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