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A series high resistance is preferable t...

A series high resistance is preferable than shunt resistance in the galvanometer circuit of potentiometer. Because 

A

shunt resistances are costly

B

shunt resistance damages the galvanometer

C

series resistance reduces the current through galvanometer in an unbalanced circuit

D

high resistances are easily available

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-CURRENT ELECTRICITY-EXERCISE - IA
  1. Metal wire is connected in the left gap, semi conductor is connected i...

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  2. Metal wire is connected in the left gap, Germanium connected in the ri...

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  3. A series high resistance is preferable than shunt resistance in the ga...

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  4. The sensitivity of potentiometer wire can be increased by

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  5. A cell of emf 'E' and internal resistance r connected in the secondary...

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  6. Potentiometer is an ideal instrument, because

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  7. On increasing the resistance of the primary circuit of potentiometer, ...

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  8. If the value of potential gradient on potentiometer wire is decreased,...

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  9. A cell of negligible internal resistance is connected to a potentiomet...

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  10. For the working of potentiometer, the emf of cell in the primary circu...

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  11. The balancing lengths of potentiometer wire are l(1) and l(2) when two...

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  12. At the moment when the potentiometer is balanced

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  13. Temperature coefficient of resistance and resistivity of a potentiomet...

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  14. Sensitivity of potentiometer

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  15. The quantity that cannot be measured by a potentiometer is ..........

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  16. The potential gradients on the potentiometer wire are V(1) and V(2) wi...

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  17. If the current in the primary circuit is decreased, then balancing len...

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  18. Statement - (A) : Thermistor can have only negative temperature coeffi...

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  19. Statement - (A): Resistivity of insulators is about 10^22 times the re...

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  20. Statement - (A) : Series combination of cells is preferred when extern...

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