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Calculate the current through a tangent galvanometer whose cells has 50 turns and a mean diameter of 22 cm when the needle is deflected through `30^(@)` at a place where `H=30 Am^(-1)`

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The correct Answer is:
0.076A
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NN GHOSH-GALVANOMETERS: AMMETER AND VOLTMETERS-Exercise
  1. A circular coil of radius 20 cm and 20 turns of wire is mounted vertic...

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  2. Calculate the current through a tangent galvanometer whose cells has 5...

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  3. A current is sent through two tangent galvenometers in series. The def...

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  4. Show that a tangent galvanometer is most sensitive when the deflection...

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  5. The total resistance of a simple circuit is 80 Omega including the res...

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  6. A tangent galvanometer of resistance 10Omega shows a deflection of 60^...

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  7. A circular loop of 50 turns and an area of 20 cm^(2) is placed in a ma...

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  8. A galvanometer coil of rectangular shape of length 4 cm and width 2 cm...

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  9. A moving coild galvanometer with a lamp-and-scale arrangement has a co...

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  10. In a moving coil galvanometer, the magnetic field used is 5T. The coil...

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

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

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

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

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

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

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

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

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

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

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