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What do you understand by positive flux?...

What do you understand by positive flux?

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`vec(B), theta = 0^(0) "i.e." phi= BA cos 0^(0) = BA`, magnetic flux is +ve
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AAKASH SERIES-ELECTROMAGNETIC INDUCTION-Exercise (Very Short Answer Questions)
  1. Weber is the unit of which physical quantity?

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  2. Is an induced e.m.f developed in a conductor, when moved in a directio...

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  3. What do you understand by positive flux?

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  4. When the magnetic flux is said to be neutral?

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  5. A glass rod of length l moves with velocity v in a uniform magnetic fi...

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  6. Two coils are being moved out of magnetic field, one coil is moved rap...

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  7. Name the scientists who discovered the generation of electric current ...

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  8. Name the scientist associated with the direction of induced current.

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  9. State Lenz's law.

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  10. Why the induced emf is also called as back emf?

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  11. What is the basic cause of induced emf?

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  12. Does Lenz's law violate the law of conservation of energy?

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

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

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  15. Who discovered eddy current?

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  16. What is an ideal inductor?

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

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  18. On which of the following factors the emf induced in the coil does not...

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

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

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