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The resistance of 100 Omega and 200 Omeg...

The resistance of 100` Omega and 200 Omega` are connected in series with the 220 V mains. When a voltmeter of 1000 `Omega` resistance is connected in parallel to 100 ` Omega` , then the reading of voltmeter is –

A

`68.75 `volt

B

`6.87 ` volt

C

` 587.5 ` volt

D

` 58.75` volt

Text Solution

Verified by Experts

The correct Answer is:
A
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MOTION-Electrical Instrument -EXERCISE -1
  1. In the circuit shown the resistance of voltmeter is 10,000 ohm and tha...

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  2. The resistance of galvanometer coil is 0.1 Komega . The current for fu...

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  3. The resistance of 100 Omega and 200 Omega are connected in series with...

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

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  5. A galvanometer of resistance 100Omega gives full scale deflection for ...

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  6. A galvanometer of resistance 100Omega gives full deffection for a curr...

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  7. A galvanometer of resistance 100Omega gives full deffection for a curr...

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  8. The deflection in a galvanometer fulls from 50 divisions to 20 divisio...

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  9. The resistance of a moving coil galvanometer is 20 Omega . If requires...

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  10. A galvanometer has a resistance of G ohm and range of V volt. Calculat...

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  11. The deflection of a moving coil galvanometer reduces to half on shunti...

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  12. When the current flowing in a galvanometer is (1/n) of the total curre...

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  13. A galvanometer can be converted into a voltmeter by connecting a

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  14. In every experiment with potentiometer in the null point state, the po...

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  15. The specific resistance per unit area of cross section of a wire is eq...

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  16. If the length of the potentiometer wire is doubled, the sensitivity fo...

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  17. The potential gradient of the potentiometer wire depends on

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  18. The potentiometer wire is replaced by another wire whose length thickn...

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  19. If the current in a potentiometer increases, the position of the null ...

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  20. The length of a potentiometer wire is 10m and a potential difference o...

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