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A potentiometer wire of length 1m and re...

A potentiometer wire of length 1m and resistance `10 Omega` is connected in series with a cell of emf 2V with internal resistance `1 Omega` and a resistance box including a resistance R. If potential difference between the ends of the wire is 1 mV, the value of R is

A

`20000Omega`

B

`19989Omega`

C

`10000Omega`

D

`9989Omega`

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TARGET PUBLICATION-CURRENT ELECTRICITY -Competitive Thinking
  1. A potentiometer wire has length 4 m and resistance 8 Omega. The resist...

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  2. A wire of length 100 cm is connected to a cell of emf 2 V and negli...

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  3. A potentiometer wire of length 1m and resistance 10 Omega is connected...

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  4. Tow cells with the same emf E and different internal resistances r(1) ...

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  5. A set of 'n' equal resistor, of value of 'R' each are connected in ser...

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  6. A potentiometer circuit has been setup for finding. The internal resis...

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  7. A Daniel cell is balanced on 125 cm length of a potentiometer wire. No...

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

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  9. In potentiometer experiment, a cell of emf 1.25 V gives balancing leng...

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  10. In a potentiometer experiment two cells of e.m.f. E and E are used...

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  11. A potentiometer has uniform potential gradient across it. Two cells c...

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  12. A potentiometer wire is 100 cm long hand a constant potential differen...

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  13. A potentiometer wire of Length L and a resistance r are connected in s...

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  14. A conducting wire has length L(1) and diameter d(1). After stretching ...

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  15. Which of the following statements is false ?

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  16. You are given 10 resistors each of resistance 2Omega. First they are ...

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  17. A filament bulb (500 W, 100 V) is to be used in a 230 V main supply. W...

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  18. An electron in potentiometer experiences a force 2.4xx10^(-19)N. The l...

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  19. Six wires each of resistance r form a tetrahedron. The equivalent resi...

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  20. Two batteries with e.m.f 12 V and 13 V are connected in parallel acros...

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