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A potentiometer circuit is set up as sho...

A potentiometer circuit is set up as shown. The potential gradient across the potentiometer wire, is k volt/cm and the ammeter, present in the circuit, reads 1.0A when two way key is switched off. The balance points , when the key between the terminals (a) 1 and 2 (b) 1 and 3 , is plugged in, are found to be at length `l_(1)cm " and " l_(2)` cm respectively. The magnitudes, of the resistors R and X in ohm, are then equal, respectively to

A

Statement-1 is true, Statement-2 is false

B

Statement-1 is true, Statement-2 is true, Statement-2 is the correct explanation of Statement-2

C

Statement-1 is true, Statement-2 is true, Statement-2 is not the correct explanation of Statement-2

D

Statement-1 is false, Statement-2 is true

Text Solution

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The correct Answer is:
D
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ALLEN-CURRENT ELECTRICITY-EXERCISE-V B
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  4. See the electricall circuit shown in this figure. Which of the followi...

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  5. A galvanometer having a coil resistance of 60 Omega shows full scale ...

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  6. A student measures the terminal potential difference (V) of a cell (of...

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  7. If an electron revolves in the circular path of radius 0.5A^(@) at a f...

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  8. The external diameter of a 314 m long copper tube is 1.2 cm and the i...

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  9. In the shown arrangement of the experiment of the meter bridge if AC c...

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  10. A potentiometer circuit is set up as shown. The potential gradient acr...

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  11. A galvanometer has a coil of resistance 100 Omega and gives full scale...

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  12. Consider the following two statements. A. Kirchhoff's junction law f...

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  13. For a the current loops shown in the figu re, kirchhoff's loop rule f...

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  14. In a potentiometer arrangement, a cell of emf 1.25 V gives a balance p...

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  15. A current of 2 A flows through a 2Omega resistor when connected acros...

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  16. If power dissipated in the 9Omega resistor in the circuit shown is 36 ...

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  17. In the circuit shown in the figure, if potential at point A is taken t...

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  18. A galvanometer of resistance, G, is shunted by a resistance S ohm. To ...

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  19. A thermocouple of negligible resistance produces an e.m.f. of 40mu (V)...

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  20. Figure shows three resistor configurations R1,R2 and R3 connected to 3...

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