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A galvanometer has an internal resistanc...

A galvanometer has an internal resistance `1.0Omega`. It given maximum deflection for a current of 50 mA. Show how this instrument can be converted into (i) a voltmeter with a maximum reading of 2.5 V and (ii) an ammeter with a maximum reading of 2.5 A

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Verified by Experts

The correct Answer is:
(i) `49Omega` in series (ii) `(1)/(49)Omega` in parallel
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SL ARORA-ELECTRICAL INSTRUMENTS-Problem for self practice
  1. Calculate the value of resistance needed to convert a galvanometer of ...

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  2. A galvanometer with a coil of resistance 10.0Omega shows full scale de...

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  3. A galvanometer has an internal resistance 1.0Omega. It given maximum d...

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  4. A galvanometer has a resistance of 15.0Omega and the meter shows full ...

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  5. In galvanometer of resistance 20Omega gives a deflection of one divisi...

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  6. In a galvanometer there is a deflection of one divisions per mA. The i...

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  7. A galvanometer of resistanece 40Omega gives a deflection of 5 division...

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  8. It is intended to measure a maximum current of 25 A with an ammeter of...

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  9. A galvanometer has a resistance of 30Omega and a current of 2 mA is ne...

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  10. A galvanometer has a resistance of 100Omega. A difference of potential...

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  11. When a galvanometer having 20 divisions scale and 50Omega resistance i...

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  12. A galvanometer has a sensitivity of 60 division/ampere. When a shunt i...

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  13. A galvanometer of resistance 3663Omega gives full scale deflection for...

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  14. A shunt of 6Omega is connected across a galvanometer of resistance 294...

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  15. A galvanometer is shunted by 1/n th of its resistance. Find the fracti...

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  16. If a galvanometer is connected in series with a high resistance so tha...

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  17. A galvanometer has current sensitivity of 5 divisions/mA and a voltage...

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  18. A 250muA meter has 50 divisions and it needs 250 mV for full scale def...

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  19. It is required to pass only one-tenth of the main current through a ga...

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  20. With a potentiometer, null points were obtained at 140 cm and 180 cm w...

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