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Induced emf is called back emf, why?...

Induced emf is called back emf, why?

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What is back emf ?

Fill ups The direction of induced e.m.f is such that it always ………………the change which ………….it.

Two identical loops, one of copper and other of aluminium are rotated with the same speed in the same magnetic field. In which case the induced emf and induced current will be more? Why?

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MODERN PUBLICATION-ELECTROMAGNETIC INDUCTION-EXERCISE
  1. Induced emf is called back emf, why?

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  2. Explain the concept of magnetic flux linked with a surface.

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  3. What is electromagnetic induction ? State its laws.

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  4. What is electromagnetic induction ? State its laws.

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  5. What is electro-magnetic induction?

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  6. What is electromagnetic induction ? State its laws.

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  7. State Lenz’s law of electromagnetic induction.

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  8. State and explain Faraday’s law of electromagnetic induction.

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  9. State and explain Faraday’s law of electromagnetic induction.

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  10. Is Lenz's law in accordance with the law of conservation of energy?

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  11. State Lenz’s law.Give one example to illustrate it.

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  12. Show that Lenz's law obeys the law of conservation of energy.

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  13. State Lenz’s law of electromagnetic induction.

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  14. Will an induced current be always produced whenever there is change of...

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  15. Derive an expression for induced e.m.f. developed in a conductor of le...

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  16. Derivea expression for inducede.m.f. whenacoilrotates in a uniform mag...

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  17. Derive an expression for induced current, when a coductor of length l ...

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  18. A straight conductor 1 meter long moves a right angles to both, its le...

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  19. What is electromagnetic induction ? State its Faraday's laws. Find an ...

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  20. What is electromagnetic induction ? State its Faraday's laws. Find an ...

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  21. A rectangular conductor LMNO is placed in a uniform magnetic field vec...

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