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When null point is obtained in the pote...

When null point is obtained in the potentiometer the current is drawn from

A

cell only

B

main battery only

C

both the cell and main battery

D

neither cell nor main battery

Text Solution

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The correct Answer is:
B
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NIKITA PUBLICATION-CURRENT ELECTRICITY-Multiple Choice Questions
  1. The sensitivity of the potentiometer can be increased by

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

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

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  4. Potentiometer was first invented by

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

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  6. A potentiometer is more sensitive when

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

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

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  9. Potentiometer is used to

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

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

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

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

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

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  15. A potentiometer has a uniform wire of length 10m and resistance 5 Ome...

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  16. A voltmeter has a resistance of 50 Omega is connected across a cell ...

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  17. With a potentiometer null point were obtained at 140 cm and 180 cm w...

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  18. In a potentiometer experiment it is found that no current passes throu...

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  19. The potential gradient along the length of a uniform wire is 5 V/m. Th...

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  20. In figure AB is a potentiometer wire of length 10 m and resistance 1...

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