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A potentiometer is an accurate and versa...

A potentiometer is an accurate and versatile device to make electrical measurements of E.M.F. because the methods involves: 

A

A combination of cells, galvanometer and resistances

B

Cells

C

Potential gradients

D

A condition of no current flow through the galvanometer

Text Solution

Verified by Experts

The correct Answer is:
D
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AAKASH SERIES-CURRENT ELECTRICITY-EXERCISE - III
  1. In the circuit shown in the figure, if potential at point A is taken t...

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  2. The current I drawn from the 5 volt source will be

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  3. A metallic conductor at 10^(@)C connected in the left gap of meter bri...

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  4. When a conducting wire is connected in the right gap and known resista...

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  5. In a metere bridge. The balance length from left end (standard resista...

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  6. A battery of internal resistance 4Omega is connected to the network of...

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  7. In a metre bridge , the gaps are enclosed by resistances of 2omega and...

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  8. The resistances in the two arms of the mater bridge are 5Omega and ROm...

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  9. A student finds the balancing length to be .l. with a cell of constant...

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  10. In an experiment with potentiometer to measure the internal resistance...

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  11. 1 ohm resistance is in series with an Ammeter which is balanced by 75c...

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  12. A battery of negligible internal resistance is connected with 10m long...

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  13. A potentiometer wire 10m long and having 20Omega resistance is connect...

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  14. A potentiometer wire has resistance of 10 ohms. A resistance box with ...

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  15. In the circuit shown in fig., the potential difference between the poi...

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  16. A thermocouple has its junctions at 0^(@)C and 100^(@)C. It produces 0...

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

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  18. A potentiometer wire is 100 cm long and a constant potential differenc...

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  19. A potentiometer is an accurate and versatile device to make electrical...

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  20. A battery consists of a variable number n of identical cells having in...

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