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There are three voltmeters of the same r...

There are three voltmeters of the same range but of resistance `10000 Omega, 8000 Omega` and `4000 Omega` respectively. The best voltmeter among these is the one whose resistance is

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Verified by Experts

The correct Answer is:
`10 sqrt2 ms^(-1)` at `45^(@)`
`COLM rArr 3mv = 30 sqrt2m rArr v = 10 sqrt2 m//s`
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ALLEN -CURRENT ELECTRICITY-EXERCISE-IV A
  1. A body is projected up such that its position vector varies with time ...

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  2. Find the equivalent resistance across AB :

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  3. There are three voltmeters of the same range but of resistance 10000 O...

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  4. In the circuit element given here, if the potential at point B = V(B) ...

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  5. A copper wire has a square cross-section, 2.0 mm on a side. It carr...

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  6. The emf of a battery is 2V and its internal resistance is 0.5Omega the...

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

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

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

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  10. Thirteen resistances each of resistance R ohm are connected in the cir...

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

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

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

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

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

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

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

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

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

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

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