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Resistance in the two gaps of a meter br...

Resistance in the two gaps of a meter bridge are `10 ohm` and `30 ohm` respectively. If the resistances are interchanged he balance point shifts by

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Verified by Experts

The correct Answer is:
`6 ms^(-1)`

COLM `rArr mv_(0) = 3mv_(1)`
`v_(1) = (v_(0))/(3)` …..(i) ltbr? COME
`rArr (1)/(2)mv_(0)^(2) = (1)/(2) (3m)v_(1)^(0) rArr v_(2) = (v_(0))/(sqrt3)`
Therefore velociity of `A = sqrt(v_(1)^(2) + v_(2)^(2)) = 6 m//s`
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ALLEN -CURRENT ELECTRICITY-EXERCISE-IV A
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  3. The emf of a battery is 2V and its internal resistance is 0.5Omega the...

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  4. The potential difference across the 100 Omega resistance in the follow...

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  5. The equivalent resistance between the point P and Q in the network giv...

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  6. When connected across the terminals of a cell, a voltmeter measures 5 ...

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  8. A group of N cells whose emf varies directly with the internal resista...

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  9. A galvanometer has resistance 36Omega if a shunt of 4Omega is added wi...

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  10. If 10^(6) electrons/s are flowing through an area of cross section of ...

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  11. The terminal voltage is (E)/(2) when a current of 2A is flowing throug...

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  12. A 1Omega voltmeter has range 1V find the additional resistance which h...

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  13. The length of a given cylindrical wire is increased by 100%. Due to th...

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  14. The length of a wire of a potentiometer is 100 cm, and the e.m.f. of i...

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  15. S.I. unit of current is :-

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

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  17. The current in conductor varies with time t as I = 2 t + 3 t^(2) where...

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  18. The ammeter A reads 2A and the voltmeter V reads 20V, the value of res...

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  19. Resistance in the two gaps of a meter bridge are 10 ohm and 30 ohm res...

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  20. Two wires of resistance R(1) and R(2) have temperature coefficient of ...

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