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The equation, ( E(1))/(E(2))= (l(1)+l(2...

The equation, `( E_(1))/(E_(2))= (l_(1)+l_(2))/(l_(1)-l_(2))`, is used to compare e.m.f. of two cells by

A

individual method

B

sum and difference method

C

null deflection method

D

equal deflection method

Text Solution

Verified by Experts

The correct Answer is:
B
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If l_(1), m_(1), n_(1), l_(2), m_(2), n_(2) and l_(3), m_(3), n_(3) are direction cosines of three mutuallyy perpendicular lines then, the value of |(l_(1),m_(1),n_(1)),(l_(2),m_(2),n_(2)),(l_(3),m_(3),n_(3))| is

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NIKITA PUBLICATION-CURRENT ELECTRICITY-Multiple Choice Questions
  1. The e.m.f. of two cells can be compared by

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

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

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

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  5. The unit of potential gradient is

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

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  7. The sensitivity of the potentiometer can be increased by

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

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

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  10. Potentiometer was first invented by

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

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  12. A potentiometer is more sensitive when

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

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

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  15. Potentiometer is used to

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

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

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

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

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  20. The wire of potentiometer has resistance 4 Omega and length 1m. It i...

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