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A metallic plate is made to oscillate in...

A metallic plate is made to oscillate in the magnetic field. What will be the effect on eddy currents and damping if slots are made in the plate and then made to oscillate?

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Eddy currents and damping effect both will be reduced.
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MODERN PUBLICATION-ELECTROMAGNETIC INDUCTION-REVISION EXERCISE (Very Short Answer Questions Carrying I mark)
  1. Can a moving bar magnet exert a force on a stationary charge? Explain.

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  2. Why eddy currents are named as eddy currents or focault currents?

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  3. What is meant by magnetic flux? A wire cuts across a flux of 0.2 xx 10...

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  4. A metallic plate is made to oscillate in the magnetic field. What will...

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  5. Why eddy currents are undesirable in the core of transformers?

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  6. Give one example of use of eddy currents.

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  7. The motion of copper plate is damped when it is allowed to oscillate b...

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  8. Why is the core of a transformer laminated?

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  9. How magnetic flux generated in a coil depends on the current flowing t...

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  10. What is the significance of Lenz's law?

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  11. Define coefficient of mutual induction,

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  12. What are the factors on which coefficient of mutual inductance of two ...

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  13. Explain Lenz's law considering a closed conducting coil and a bar magn...

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  14. Define mutual inductance of 1 Henry.

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  15. How does self inductance of a coil depend on number of turns in the co...

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  16. What is the physical significance of self-induction?

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  17. A square loop of a conducting material of side l and resistance r is d...

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  18. How does the mutual inductance of a pair of coils change when (i) di...

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  19. What will be the effect on the self-inductance of a long solenoid, if ...

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  20. How will you orient two circular loops to have (i) smallest mutual ind...

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