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The best instrument for the accurate mea...

The best instrument for the accurate measurement of the e.m.f. of a cell is

A

voltmeter

B

ammeter

C

potentiometer

D

Wheatstone's bridge

Text Solution

Verified by Experts

The correct Answer is:
C
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NIKITA PUBLICATION-CURRENT ELECTRICITY-Multiple Choice Questions
  1. If the length of potentiometer wire is increased, then the accuracy in...

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  2. In a potentiometer circuit, all the +ve terminals should be connected...

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  3. The best instrument for the accurate measurement of the e.m.f. of a ce...

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  4. A potentiometer is an ideal device of measuring potential difference b...

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

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

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

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

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  9. The unit of potential gradient is

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

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  11. The sensitivity of the potentiometer can be increased by

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

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

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  14. Potentiometer was first invented by

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

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  16. A potentiometer is more sensitive when

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

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

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  19. Potentiometer is used to

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

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