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A moving coil galvanometer has a resista...

A moving coil galvanometer has a resistance of 200`Omega` and gives a full-scale deflection with a current of 10mA. Explain how you would convert it into (i) an ammeter reading up to 1A, (ii) voltmeter reading up to 10 V. Also calculate the resistance of an ammeter and voltmeter so formed.

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The correct Answer is:
`2.02Omega` in pareallel, `800Omeaga` in series, `R_(A)=2Omega`,`R_(v)=1000Omega`
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NN GHOSH-GALVANOMETERS: AMMETER AND VOLTMETERS-Exercise
  1. In a moving coil galvanometer, the magnetic field used is 5T. The coil...

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  2. A milliammeter has a resistance of 10Omega and each division of its gr...

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  3. A moving coil galvanometer has a resistance of 200Omega and gives a fu...

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  4. A voltmeter with a resistance of 8000Omega is used to measure the emf ...

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  5. A cheap voltmeter with an internal resistance of 30Omega is connected ...

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  6. A voltmeter of range of 10 V and resistance 5000 Omega is connected in...

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  7. There is a milliameter, each division of which reads 1 mA. It has a re...

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  8. An ammeter of resistance 0.02 Omega is connected in the usual may to a...

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  9. A voltmeter of resistance 3000Omega can read up to 10 V. how would you...

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  10. A millimmater of resistance 20Omega reads up to 50 mA. Explain how the...

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  11. A battery of emf 5V and internal resistance 20Omega is connected to a ...

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  12. A 150 V voltmeter has a resistance of 20,000Omega when connected in se...

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  13. A moving coild galvanometer of resistance 20Omega gives a full scale d...

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  14. Two tangent galvanometer of 50 and 100 tunrs of the same wire and radi...

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  15. A 600Omega resistor and a 400Omega resistor are connected in series ac...

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  16. Three voltmeters A, B and C have the same range but different resistan...

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  17. A galvanometer with a coil resistance of 100Omega shows a full-scale d...

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  18. When the modified galvanometer of exercise 26 is connected across the ...

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  19. An ammeter and a voltmeter are connected in series to a battery of emf...

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  20. An ammeter and a voltmeer are connected as in figures in order to ...

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