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In a potentiometer experiment it is foun...

In a potentiometer experiment it is found that no current passes through the galvanometer when the terminals of the cell are connected across `0.52 m` of the potentiometer wire. If the cell is shunted by a resistance of `5Omega` balance is obtained when the cell connected across` 0.4m` of the wire. Find the internal resistance of the cell.

A

`25Omega`

B

`1Omega`

C

`1.5 Omega`

D

`2Omega`

Text Solution

Verified by Experts

The correct Answer is:
C
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MOTION-CURRENT ELECTRICITY-EXERCISE -4 (Level -I)
  1. In the circuit shown below, the key K is closed at t =0. The current t...

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  2. If 400 Omega of resistance is made by adding four 100 Omega resistance...

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  3. The current in the primary circuit of a potentiometer is 0.2 A. The sp...

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  4. If a copper wire is stretched to make it 0.1% longer wha is the percen...

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  5. Two electic bulbs marked 25 W -220 V and 100 W - 220 V are connected i...

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  6. Resistance of a given wire is obtained by mea suring the current flowi...

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  7. The supply voltage to room is 120 V. The resistance of the lead wires ...

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  8. Assertion : Higher the range, greater is the resistance of ammeter. ...

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  9. In a large building, there are 15 bulbs of 40 W, 5 bulbs of 100 W, 5 f...

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  10. When 5 V potential difference is applied across a wire of length 0.1 m...

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  11. In the circuit shown , the current in the 1Omega resistor is :

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  12. A galvanometer having a coil resistance of 100 omega gives a full scal...

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  13. The temperature dependence of resistance of Cu and undoped Si in the t...

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  14. In the above circuit the current in each resistance is -

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  15. In the given circuit diagram when the current reaches steady state in...

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  16. Which of the following statements is false ?

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  17. The reading of the ammeter for a silicon diode in the given circuit is...

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

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  19. On interchanging the resistances, the balance point of a meter bridge ...

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

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