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(a) How does a voltmeter differ from amm...

(a) How does a voltmeter differ from ammeter?
(b) What is the main function of soft iron core used in a moving coil galvanometer?

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MODERN PUBLICATION-MOVING CHARGES AND MAGNETISM-Revision Exercises (Short Answer Questions )
  1. Explain the principle and working of a cyclotron with the help of a sc...

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  2. A cyclotron is not suitable to accelerate electrons. Why?

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  3. Using Biot-Savart’s law, derive an expression for magnetic field at an...

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  4. A current I flows in a conductor placed perpendicular to the plate of ...

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  5. Two small circular loops, marked (1) and (2), carrying equal currents ...

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  6. A wire of length L is bent around in the form of a coil having N turns...

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  7. Two identical coils P and Q each of radius R are lying in perpendicula...

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  8. A rectangular coil of sides l and b carrying a current I is subjected ...

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  9. Define electric dipole moment. Is it a scalar or a vector? Derive the ...

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  10. Increasing the current sensitivity of a galvanometer may not necessari...

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  11. What is the function of the radial magnetic field in the moving coil g...

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  12. Two protons P and Q moving with the same speed enter magnetic field B(...

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  13. (a) How does a voltmeter differ from ammeter? (b) What is the main ...

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  14. State Ampere's circuital law. By using it derive an expression for mag...

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  15. (a) State the principle of working of a galvanometer. (b) Agalvanome...

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  16. A galvanometer of resistance G can be converted into a voltmeter of ra...

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  17. A electron of mass, m(e) revolves around a nucleus of charge +Ze....

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  18. A straight wire of1.4 m long carries a current of 7 A at right angles ...

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  19. A wire of length l is bent in the form of a square and carries a curre...

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  20. State the factors on which the current sensitivity of a galvanometer ...

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