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A rectangular loop of metallic wire is o...

A rectangular loop of metallic wire is of length `a` and breadth `b` and carries a current `I`. Find the magnitude of magnetic field at the centre `O` of the loop.

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MODERN PUBLICATION-FORCE ON A CURRENT-EXERCISE
  1. Derive an expression for the torque acting on a rectangular current ca...

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  2. Derive an expression for the torque acting on a rectangular current ca...

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  3. A rectangular loop of metallic wire is of length a and breadth b and c...

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  4. Derive an expression for the torque acting on a rectangular current ca...

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  5. Derive an expression for the torque acting on a rectangular current ca...

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  6. Draw the labelled diagram of a moving coil galvanometer. State the pri...

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  7. State the principle of moving coil galvanometer?

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  8. State the principle of moving coil galvanometer?

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  9. How can a galvanometer be converted into an ammeter?

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  10. How can a galvanometer be converted into an ammeter?

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  11. How can a galvanometer be converted into an ammeter?

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  12. How can a galvanometer be converted into an ammeter?

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  13. How can a galvanometer be converted into an ammeter?

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  14. How will you convert galvanometer into an ammeter? Why is an ammeter a...

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  15. Explain how a Galvanometer can be converted into Voltmeter.

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  16. What is the basic difference in converting a galvanometer into an amme...

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  17. What is the basic difference in converting a galvanometer into an amme...

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  18. A moving coil galvanometer, having a resistance G, produces full scale...

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  19. Explain the use of a starter for operating a d.c. motor.

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  20. What is the use of a starter?

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