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What is the power required to move a con...

What is the power required to move a conductor of length l having resistance r, with velocity v in a magnetic field B?

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The correct Answer is:
`P= (B^(2)l^(2)v^(2))/(r)`
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MODERN PUBLICATION-ELECTROMAGNETIC INDUCTION-REVISION EXERCISE (Very Short Answer Questions Carrying I mark)
  1. Derive the expression for motional emf induced in a conductor moving i...

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  2. Define self-inductance of a coil. Obtain the expression for the energy...

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  3. What is the power required to move a conductor of length l having resi...

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  4. Can a moving bar magnet exert a force on a stationary charge? Explain.

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

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

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

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

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  9. Give one example of use of eddy currents.

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

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  11. Why is the core of a transformer laminated?

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

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

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  14. Define coefficient of mutual induction,

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

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

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  17. Define mutual inductance of 1 Henry.

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

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

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

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