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Who discovered eddy current?...

Who discovered eddy current?

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What are eddy currents ? Discuss brifly any two applications of eddy currents.

What are eddy currents ? Discuss brifly any two applications of eddy currents.

Assertion : A laminated core is used in transformers to increase eddy currents. Reason : The efficiency of a transformer increases with increase in eddy currents.

AAKASH SERIES-ELECTROMAGNETIC INDUCTION-Exercise (Very Short Answer Questions)
  1. Does Lenz's law violate the law of conservation of energy?

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  2. Does Lenz's law hold for an open circuit

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  3. Consider a cube ABCGHIJK of sides a placed in a uniform magnetic field...

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  4. Who discovered eddy current?

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  5. What is an ideal inductor?

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  6. Name the quantity that plays an identical role in an electrical circui...

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  7. The induced e.m.f. in a coil does not depend on

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  8. Name two factors on which the self-inductance of an air-core coil depe...

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  9. What is the effect of metallic core on self inductance?

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  10. Why inductors are made of copper?

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  11. Name two factors on which mutual inductance between a pair of coils de...

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  12. If two coils are very tightly would one over the other, will M increas...

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  13. What are the dimensions of L/R?

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  14. Why the inductance per unit length for a solenoid near its centre is d...

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  15. An artificial satellite with a metal surface is orbiting the earth in ...

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  16. Why the coil of a dead beat galvanometer is would on a metal frame?

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  17. Two identical coils, one of copper and the other of iron, are rotated ...

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  18. A wire kept along north-south direction is allowed to fall freely. Wil...

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  19. A wire kept in east west direction is allowed to fall freely, will an ...

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  20. Why a thick metal plate oscillating about a horizontal axis stops when...

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