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A resistance of 1980Omega is connected i...

A resistance of `1980Omega` is connected in series with a voltmeter, after which the scale division becomes 100 times larger. Find the resistance of voltmeter.

A

`10Omega`

B

`20Omega`

C

`30Omega`

D

`40Omega`

Text Solution

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The correct Answer is:
B
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DC PANDEY-CURRENT ELECTRICITY-Check point
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  2. The net resistance of a volmeter should be large to ensure that

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  3. Two galvanometers A and B require 3 mA and 6 mA respectively, to produ...

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  4. An ammeter A, a voltmeter V and a resistance R are connected as shown ...

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  5. In the adjoining circuit, the e.m.f. of the cell is 2 volt and the int...

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  6. What is the reading of voltmeter in the following figure ?

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  7. A galvanometer of resistance 25 Omega gives full scale deflection for ...

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  8. An ammeter and a voltmeter are joined in sereis to a cell. Their readi...

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  9. In the circuit shown in the figure, the voltmeter reading is

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  10. The shunt required for 10% of main current to be sent through the movi...

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

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  12. A microammeter has as resistance of 100 Omega and full scale range of ...

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  13. Show that the percentage error in the measurement of resistance by a m...

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  14. A resistance of 1980Omega is connected in series with a voltmeter, aft...

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  15. In the given circuit, it is observed that the current I is independent...

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  16. AB is a wire of uniform resistance. The galvanometer G shows no deflec...

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  17. A potentiometer is used for the compaisem of e.m.f. of two cells E(1) ...

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  18. In a potentiometer experiment, the galvanometer shows no deflection wh...

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  19. A resistance of 4 Omega and a wire of length 5 meters and resistance 5...

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  20. Potentiometer wire of length 1 m is connected in series with 490 Omega...

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