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What is the basic cause of induced e.m....

What is the basic cause of induced e.m.f. ?

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The correct Answer is:
Change of magnetic flux with time.
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MODERN PUBLICATION-ELECTROMAGNETIC INDUCTION-REVISION EXERCISE (Very Short Answer Questions Carrying I mark)
  1. How much deflection is produced in a galvanometer attached to a coil, ...

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  2. How current can be induced in a coil C due to another coil C'?

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  3. What is the basic cause of induced e.m.f. ?

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  4. The induced e.m.f. is sometimes called back e.m.f. Why ?

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  5. Does the change in magnetic flux always produce both emf and current?

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  6. A vertical matallic pole falls down through the plane of magnetic meri...

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  7. Two identical loops, one of copper and other of manganin, are removed ...

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  8. What will be the magnitude of induced emf in a rectangular loop ABCD, ...

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  9. Predict the polarity of the capacitor in the situation described below...

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  10. Use Lenz's law to determine the direction of the induced current when ...

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  11. The electric current flowing in a wire in the direction from B to A de...

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  12. What do you mean by magnetic flux through a surface?

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  13. A long straight current carrying wire passes normally through the c...

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  14. What is the relation between weber and Maxwell ?

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  15. Predict the direction of induced current in metal rings 1 and 2 when c...

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  16. Volt-sec is the unit of which physical quantity?

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  17. State Lenz's law of electromagnetic induction. The magnetic threading ...

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  18. When the north pole of a magnet is moved away from a coil, what is the...

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  19. Why a spark is produced in a switch sometimes when it is switched off?

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  20. Derive the expression for motional emf induced in a conductor moving i...

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